Refereed articles:

1. (G. A. Shields, J. B. Oke and W. L. W. Sargent) "The Optical Spectrum of 3C 120," Astrophysical Journal, 176, 75 (1972).
   

2. (D. B. Shaffer, G. A. Shields, and B. Schupler) "21 cm and 18 cm Observations of the Cygnus X-3 Radio Outburst," Nature Phys. Sci., 239 (1972).
   

3. "X-ray Ionization and the Helium Abundance in 3C 120," Astrophysical Journal, 191, 309 (1974).
   

4. (D. B. Shaffer and G. A. Shields) "A Search for Additional Radio Sources in the Kukarkin Variable Star Catalog," Astrophysical Journal Letters, 192, L83 (1974).
   

5. "Composition Gradients Across Spiral Galaxies," Astrophysical Journal, 193, 335 (1974).
   

6. "The Underabundance of Gaseous Iron in the Planetary Nebula NGC 7027," Astrophysical Journal, 195, 475 (1975).
   

7. (G. A. Shields and J. B. Oke) "The Emission-Line Spectrum of NGC 1068," Astrophysical Journal, 197, 5 (1975).
   

8. (S. Perrenod and G. A. Shields) "X-ray Heating and the Optical Light Curve of HZ Herculis," Astrophysical Journal, 198, 153 (1975).
   

9. (G. A. Shields and J. B. Oke) "The Spectral Energy Distribution of NGC 1275," Publications of the Astronomical Society of the Pacific, 87, 879 (1975).
   

10. (G. A. Shields and B. Tinsley) "Composition Gradients Across Spiral Galaxies: II. The Stellar Mass Limit," Astrophysical Journal, 203, 66 (1976).
    

11. "The Abundance of Nitrogen in QSOs," Astrophysical Journal, 204, 330 (1976).
    

12. (G. A. Shields and J. C. Wheeler) "Magnetized Accretion Disks and the Radio Outbursts of 3C 120 and Cygnus X- 3," Astrophysical Letters, 17, 69 (1976).
    

13. (J. C. Wheeler and G. A. Shields) "The Origin of the Black Hole in Cygnus X-1," Nature, 259, 642 (1976).
    

14. (J. B. Oke and G. A. Shields) "Seyfert Galaxies with Strong Fe II Emission," Astrophysical Journal, 207, 713 (1976).
    

15. (P. J. Young, G. A. Shields and J. C. Wheeler) "The Black Tide Model of QSOs," Astrophysical Journal, 212, 367 (1977).
    

16. "The Origin of the Broad Line Emission from Seyfert Galaxies," Astrophysical Letters, 18, 119 (1977).
    

17. (S. C. Perrenod, G. A. Shields and E. J. Chaisson) "Observation and Interpretation of Temperature Gradients in the Orion Nebula," Astrophysical Journal, 216, 427 (1977).
    

18. "Gas-Phase Abundances of Iron and Carbon in Planetary Nebulae," Astrophysical Journal, 219, 559 (1978).
    

19. "Ionization Structure and Composition of the Planetary Nebula NGC 7027," Astrophysical Journal, 219, 565 (1978).
    

20. (G. A. Shields and J. C. Wheeler) "The Black Flash Model of QSOs," General Relativity and Gravitation, 9, 189 (1978).
    

21. "Thermal Continuum from QSOs," Nature, 272, 706 (1978).
    

22. (G. A. Shields and J. C. Wheeler) "Sustenance of a Black Hole in a Galactic Nucleus," Astrophysical Journal, 222, 667 (1978).
    

23. "Gravitation, Primordial Stars, and the Dark Mass," Nature, 273, 519 (1978).
    

24. (G. A. Shields and L. Searle) "The Composition Gradient Across M101," Astrophysical Journal, 222, 821 (1978).
    

25. (G. J. Ferland and G. A. Shields) "Fine Structure Lines and the 10 micron Excess of Nova Cygni 1975," Astrophysical Journal (Letters), 224, L15 (1978).
    

26. (G. A. Shields and G. J. Ferland) "The Origin of the Coronal Line Emission from Novae," Astrophysical Journal, 225, 950 (1978).
    

27. (G. J. Ferland and G. A. Shields) "Heavy Element Abundances of Nova Cygni 1975," Astrophysical Journal, 226, 172 (1978).
    

28. (J. M. Scalo and G. A. Shields) "Iron Condensation and the Formation of Planetary Nebulae," Astrophysical Journal, 228, 521 (1979).
    

29. (G. J. Ferland, H. Netzer and G. A. Shields) "On the Asymmetries of the Emission Lines of QSOs, Seyfert Galaxies, and Novae," Astrophysical Journal, 232, 382 (1979).
    

30. (G. A. Shields and R. F. Mushotzky) "The Effect of Hard X-rays on the Emission-Lines of Seyfert Galaxies and QSOs," Astronomy and Astrophysics, 79, 56 (1979).
    

31. (R. J. Dufour, R. J. Talbot, E. B. Jensen and G. A. Shields) "M83 II: Spectral Characteristics and Chemical Abundances of H II Regions," Astrophysical Journal, 236, 119 (1980).
    

32. "Gas-Phase Abundances of Refractory Elements in Planetary Nebulae: A Hot-Wind Model," Publications of the Astronomical Society of the Pacific, 92, 418 (1980).
    

33. (J. C. Weisheit, G. A. Shields and C. B. Tarter) "X-ray Heating and Ionization of Broad-Line Emission Regions in QSOs and Active Galaxies," Astrophysical Journal, 245, 406 (1981).
    

34. (M. L. McCall, P. M. Rybski and G. A. Shields) "NGC 3344: Unusual Abundances for an Sbc Galaxy?" Publications of the Astronomical Society of the Pacific, 93, 273 (1981).
    

35. (G. A. Shields and C. F. McKee) "Electron Scattering by Hot Gas in QSOs?" Astrophysical Journal (Letters), 246, L57 (1981).
    

36. (C. M. Gaskell, G. A. Shields and E. J. Wampler) "Abundances of Refractory Elements in Quasars", Astrophysical Journal, 249, 443 (1981).
    

37. (G. A. Shields, L. H. Aller, C. D. Keyes, and S. J. Czyzak) "The Optical and Ultraviolet Spectrum of the Planetary Nebula NGC 2440," Astrophysical Journal, 248, 569 (1981).
    

38. (R. J. Dufour, G. A. Shields and R. J. Talbot, Jr.) "The Carbon Abundance in the Magellanic Clouds from IUE Observations of H II Regions," Astrophysical Journal, 252, 461 (1982).
    

39. (G. J. Ferland, D. L. Lambert, M. L. McCall, G. A. Shields and M. H. Slovak) "Physical Conditions in the Accretion Disk of V603 Aql," Astrophysical Journal, 260, 794 (1982).
    

40. (M. Begelman, C. F. McKee and G. A. Shields) "Compton Heated Winds and Coronae Above Accretion Disks. I. Dynamics", Astrophysical Journal, 271, 70 (1983).
    

41. (G. A. Shields, A. Dalgarno and E. Sternberg) "Line Emission From Charge Transfer with Atomic Hydrogen at Thermal Energies", Physical Review A, 28, 2137 (1983).
    

42. "Broad Emission Lines of QSOs are Consistent With Rotating, Supermassive Star", Nature, 305, 407 (1983).
    

43. (M. Elitzur, G. J. Ferland, W. G. Mathews and G. A. Shields) "Stimulated Emission and the Flat Balmer Decrements of Cataclysmic Variable Stars", Astrophysical Journal (Letters), 272, L55 (1983).
    

44. (B. J. Wills et al.) "The QSO 1156+295: A Multifrequency Study of Recent Activity," Astrophysical Journal, 274, 62 (1983).
    

45. (J. B. Oke, G. A. Shields and D. G. Korycansky) "The 3000 Å Bump in Quasars", Astrophysical Journal, 277, 64 (1984).
    

46. (G. J. Ferland, R. E. Williams, D. L. Lambert, G. A. Shields, M. Slovak, P. M. Gondhalekar, and J. W. Truran) "IUE Observations of DQ Herculis and the Nature of the DQ Her Syndrome", Astrophysical Journal, 281, 194 (1984).
    

47. (M. L. McCall, P. M. Rybski, and G. A. Shields) "The Chemistry of Galaxies", Astrophysical Journal Supplement, 57, 1 (1985).
    

48. (D.N.C. Lin and G. A. Shields) "Accretion Disks and Periodic Outbursts of Active Galactic Nuclei", Astrophysical Journal, 305, 28 (1986).
    

49. (G. A. Shields, C. F. McKee, D.N.C. Lin, and M. C. Begelman) "Compton Heated Winds and Coronae Above Accretion Disks III. Instability and Oscillations", Astrophysical Journal, 306, 90 (1986).
    

50. (H. L. Dinerstein and G. A. Shields) "Re-assessing the Primordial Helium Abundance", Astrophysical Journal, 311, 45 (1986).
    

51. (D. R. Garnett and G. A. Shields) "The Composition Gradient Across M81", Astrophysical Journal, 317, 82 (1987).
    

52. (J. Silk, R.F.G. Wyse, and G. A. Shields) "On the Origin of Dwarf Galaxies," Astrophysical Journal (Letters), 322, L59 (1987).
    

53. (Cheng, F.-H., Shields, G. A., Lin, D.N.C., and Pringle, J. E.) "Polarization of Thermal Radiation From Accretion Disks in Dwarf Novae," Astrophysical Journal, 328, 223 (1988).
    

54. (R. J. Dufour, D. R. Garnett, and G. A. Shields) "The Abundances of Carbon and Nitrogen in I Zw 18", Astrophysical Journal, 332, 752 (1988).
    

55. (C. J. Clarke and G. A. Shields) "Thermal Light Variations of Active Galactic Nuclei," Astrophysical Journal, 338, 32 (1989).
    

56. (S. Mineshige and G. A. Shields) "Accretion Disk Thermal Instability in Galactic Nuclei," Astrophysical Journal, 351, 47 (1990).
    

57. (H. H. Coleman and G. A. Shields) "The Polarization of Thermal Radiation From Supermassive Accretion Disks," Astrophysical Journal, 363, 415 (1990).
    

58. (G. A. Shields, E. D. Skillman, and R. C. Kennicutt, Jr.) "High Chemical Abundances in Virgo Spiral Galaxies?", Astrophysical Journal, 371, 82 (1991).
    

59. (D. R. Garnett, R. J. Dufour, M. Peimbert, S. Torres-Peimbert, R. Terlevich, E. Terlevich, and G. A. Shields) "The Evolution of C/O in Dwarf Galaxies from Hubble Space Telescope FOS Observations,"Astrophysical Journal, 443, 64 (1995).
    

60. (D. R. Garnett, R. J. Dufour, M. Peimbert, S. Torres-Peimbert, G. A. Shields, E. D. Skillman, E. Terlevich, and R. Terlevich, ) "Si/O Abundance Ratios in Extragalactic H II Regions From Hubble Space Telescope UV Spectroscopy," Astrophysical Journal, 449, L77 (1995).
    

61. "The Extraordinary Abundances of QSO Broad Absorption Line Regions: A Matter of Novae?" Astrophysical Journal (Letters), 461, L9 (1996).
    

62. (E. D. Skillman, R. C. Kennicutt, Jr., G. A. Shields, and D. Zaritsky) "Chemical Abundances in Virgo Spiral Galaxies II. Effects of Cluster Environment," Astrophysical Journal, 462, 147 (1996).
    

63. (D. R. Garnett, E. D. Skillman, R. J. Dufour, and G. A. Shields) "High Carbon in I Zwicky 18: New Results from Hubble Space Telescope Spectroscopy," Astrophysical Journal, , 481, 174 (1997).
    

64. (D. R. Garnett, G. A. Shields, E. D. Skillman, S. P. Sagan, and R. J. Dufour) "Interstellar Abundance Gradients in NGC 2403: Comparison to M33 ," Astrophysical Journal, 489, 63 (1997).
    

65. (G. A. Shields, L. Wobus, and Dirk Husfeld) "Accretion Disks and the Lyman Continuum Polarization of QSOs," Astrophysical Journal, 496, 743 (1998).
    

66. (D. R. Garnett, G. A. Shields, M. Peimbert, S. Torres-Peimbert, E. D. Skillman, R. J. Dufour, E. Terlevich, and R. J. Terlevich)" Carbon in Spiral Galaxies from Hubble Space TelescopeSpectroscopy," Astrophysical Journal, 513, 168 (1998).

67. "Lyman Continuum Polarization Rise in the QSO PG 1222+228," Publications of the Astronomical Society of the Pacific, 112, 586 (2000).
    

68. (V. Junkkarinen, G. A. Shields, E. A. Beaver, E. M. Burbidge, R. D. Cohen, F. Hamann, and R. W. Lyons) "LBQS 0103-2753: A 0.3" Binary Quasar," Astrophysical Journal (Letters), 549, L155 (2001).
    

1. "Physical Conditions in the Emission-Line Regions of BL Lac Objects and QSOs," in Proceedings of the Pittsburgh Conference on BL Lac Objects (A. Wolfe, Editor: University of Pittsburgh), (1978).
   

2. "Effects of Dust Formation on Chemical Abundances", in I.A.U. Symposium No. 102, Planetary Nebulae, ed. D. R. Flower (D. Reidel), p. 259 (1983).

3. (G. J. Ferland and G. A. Shields) "The Theory of Emission- Line Regions in Active Galactic Nuclei," in Active Galactic Nuclei and Quasi-Stellar Objects, ed. J. S. Miller (San Francisco: University Science Books), pp. 157-184 (1985).
   

4. "The Helium Abundance in Dwarf Emission-Line Galaxies," in Star Forming Dwarf Galaxies, D.Kunth, T. X. Thuan and J. Tran Thanh Van (eds.), (Paris: Institut d'Astrophysique), pp. 197-205 (1986).
   

5. "A Modeler's View of H II Regions," in The Meudon Workshop on Model Nebulae, ed. D. Pequignot (Paris: Observatoire de Meudon), pp. 225-234 (1986).
   

6. "Models of H II Regions," Publications of the Astronomical Society of the Pacific, 98, 1072 (1986).
   

7. "Measurements of the Primordial Abundance of Helium," in The 13th Texas Symposium on Relativistic Astrophysics, M. P. Ulmer (ed.), (Singapore: World Scientific), pp. 192-202 (1987).
   

8. "Future AGN Research II," in IAU Symposium No. 134, Active Galactic Nuclei, ed. D. E. Osterbrock and J. S. Miller (Dordrecht: Kluwer), pp. 577-587 (1989).
   

9. "Quasar Disks," in 14th Texas Symposium on Relativistic Astrophysics, Annals of the New York Academy of Sciences, 571, pp. 110-127 (1989).
   

10. "Charge Transfer in Astrophysical Nebulae," in Molecular Astrophysics (A Volume Honouring A. Dalgarno), ed. T. W. Hartquist (Cambridge Univ. Press), pp. 461-472 (1990).
    

11. "Extragalactic H II Regions," Annual Reviews of Astronomy and Astrophysics, 28, 525-560 (1990).
    

12. (G. A. Shields and H. H. Coleman) "Atmospheres and Thermal Continua of AGN Disks," in NATO Advanced Research Workshop on Theory of Accretion Disks--2, ed. W. Duschl et al. (Dordrecht: Kluwer), pp. 223-233 (1994).
    

13. (G. A. Shields, E. D. Skillman, R. C. Kennicutt, Jr., and D. Zaritsky) "High Chemical Abundances in H I Deficient Spirals of the Virgo Cluster," Fifth Mexico-Texas Conference on Astrophysics, Revista Mexicana de Astronomía y Astrofisica, (Serie de Conferencias), 3, 149(1995).
    

14. "A Brief History of Active Galactic Nuclei," Publications of the Astronomical Society of the Pacific, 111, 661 (1999).
    

15. "Chemical Evolution of Galaxies," in Ionized Gaseous Nebulae, ed. William Henney et al., Revista Mexicana de Astronomia y Astrofisica, (Serie de Conferencias), in press (2001).

16. (G. A. Shields, V. Junkkarinen, E. A. Beaver, E. M. Burbidge, R. D. Cohen, F. Hamann, and R. W. Lyons) "Discovery of a 2 Kpc Binary Quasar," Astrophysical Journal (Letters), 549, L155 (2001).
    

1. "Novae and BAL QSOs: The Aluminum Test," in Mass Ejection from AGNs, Publications of the Astronomical Society of the Pacific, Conference Series, ed. Nahum Arav, Isaac Shlosman, and Ray Weymann, in press (1997).
   

2. (G. A. Shields, L. Wobus, and Dirk Husfeld) "Accretion Disks and the Lyman Continuum Polarization of QSOs," in Accretion Processes in Astrophysical Systems: Some Like it Hot!, Proceedings of the 8th Annual Astrophysics Conference in Maryland, ed. S. Holt and T. Kallman, in press (1997).
   

   (G. A. Shields, E. Agol, and O. Blaes) "The Puzzle of the Lyman Continuum Polarization of QSOs" in The Seventh Texas-Mexico Conference on Astrophysics: Flows, Blows, and Glows, ed. W. H. Lee and S. Torres-Peimbert, Revista Mexicana de Astronomia y Astrofisica (Serie de Conferencias), 10, 87-95 (2001).
   

1. "Are the Black Holes Really There?" Astronomy Magazine, 6, No. 10, p. 6 (1978).
   

2. (D. B. Shaffer and G. A. Shields) "Why All the Fuss About Quasars?" Astronomy Magazine, 8, No. 10, p. 6, (1980).
   

3. "The Chemistry of Galaxies," Astronomy Magazine, 9, No. 6, p. 6, (1981).
   

4. "Who's Afraid of the Big Black Hole?," Stardate, Vol. 27, No. 4, p. 15, (1999).
   

5. (G. A. Shields and J. Kormendy) "Galactic Monsters," Stardate, Vol. 28, No. 5, p. 4, (2000).
   

6. "Active Galaxies: Fire in the Hole!," Stardate, Vol. 29, No. 4, p. 15, (2001).
   

1. "The Texas-Mexico Conference on Nebulae and Abundances," University of Texas at Austin, April 16-18, 1986. Proceedings published in Publications of the Astronomical Society of the Pacific, 98, 956 (1986). [Chairman of the Organizing Committee and Editor of the Proceedings]

2. "The Fourth Texas-Mexico Conference on Astrophysics: The Interaction of Stars and Gas," University of Texas at Austin, March 1-2, 1993. Proceedings in Revista Mexicana de Astronomía y Astrofisica, 27, 1-230 [Chairman of the Organizing Committee].

3. "The Seventh Texas-Mexico Conference on Astrophysics: Flows, Blows, and Glows" University of Texas at Austin, April 5-8, 20001. Proceedings in Revista Mexicana de Astronomía y Astrofisica (Serie de Conferencias), 10, 1-238 (2001) [Chairman of the Organizing Committee].