Guth, A. H. "Starting the Universe: The Big Bang and Cosmic Inflation." In 



Bubbles. Voids, and Bumps in Time: The New Cosmology , ed. J. Cornell, p. 



105. Cambridge: Cambridge University Press, 1989. Also published as "The 



Birth of the Cosmos." In Origins and Extinctions , eds. D. E. Osterbrock and 



P. H. Raven, p. 1. New Haven: Yale University Press, 1988. 

 Guth, A. H., and Steinhardt, P. J. "The Inflationary Universe." In The New Physics . 



ed. P. Davies, p. 34. Cambridge: Cambridge University Press, 1989. 

 Gwinn, C. R.; Cordes, J. M.; Bartel, N.; Wolszczan, A.; and Mutel, R. L. "VLBI 



Observations of a Pulsar's Scattering Disk." Astrophysical Journal (Letters) 334 



(1988): L13. 

 . "VLBI Observations of the Scattering Disk of Pulsar 1933+16." In 



Radio Wave Scattering in the Interstellar Medium , eds. J. M. Cordes, B. J. 



Rickett, and D. C. Backer, p. 129. New York: American Institute of Physics, 



1988. 

 Gwinn, C. R.; Moran, J. M.; and Reid, M. J. "Interstellar Scattering of Radiation from 



H2O Masers in W49 and Sgr B2." In Radio Wave Scattering in the Interstellar 



Medium , eds. J. M. Cordes, B. J. Rickett, and D. C. Backer, p. 106. New York: 



American Institute of Physics, 1988. 

 Gwinn, C. R.; Moran, J. M.; Reid, M. J.; Schneps, M. H.; Genzel, R.; and Downes, 



D. "Proper Motions of H2O Masers in W49(N) and the Distance to the Galactic 



Center." In The Center of the Galaxy. Proceedings of IAU Symposium No. 136 . 



ed. M. Morris, p. 47. Dordrecht, Holland: Kluwer Academic Publishers, 1989. 

 Habbal, S. R.; Ellman, N. E.; and Gonzalez, R. "Synthesis Mapping of a Solar 



Type I Storm Simultaneously at 90 and 20 Centimeters with the VLA." 



Astrophysical Journal 342 (1989): 594. 

 Harmon, J. K.; Campbell, D. B.; Hine, A. A.; Shapiro, 1. 1.; and Marsden, B. G. "Radar 



Observations of Comet IRAS-Araki-Alcock (1983d)." Astrophysical Journal 338 



(1989): 1071. 

 Harnden, F. R., Jr., and Seward, F. D. "The X-Ray Environment of the Precursor of 



SN1987A." In Supernova 1987A in the Large Magellanic Cloud. Proceedings of 



the Fourth George Mason Astrophysics Workshop , eds. M. Kafatos and A. G. 



Michalitsianos, p. 408. Cambridge: Cambridge University Press, 1988. 

 Harris, D. E. "Bremsstrahlung from Radio Source Electrons." In Proceedings of the 



Gamma Ray Observatory Science Workshop , ed. W. Neil Johnson, p. 4. 



Greenbelt, Maryland: Goddard Space Flight Center, 1989. 

 Hartigan, P. "The Visibility of the Mach Disk and the Bow Shock of a Stellar Jet." 



Astrophysical Journal 339 (1989): 987. 

 Hartmann, L., and Kenyon, S. J. "Accretion Disks Around Young Stars." In 



Formation and Evolution of Low-Mass Stars , eds. A. K. Dupree and M. T. V. T. 



Lago, p. 163. Dordrecht, Holland: Kluwer Academic Publishers, 1988. 

 Hartmann, L.; Kenyon, S. J.; Hewett, R.; Edwards, S.; Strom, K. M.; Strom, S. E.; 



and Stauffer, J. R. "Pre-Main Sequence Disk Accretion in Z Canis Majoris." 



Astrophysical Journal 338 (1989): 1001. 

 Hartmann, L., and Raymond, J. C. "Wind-Disk Shocks Around T Tauri Stars." 



Astrophysical Journal 337 (1989): 903. 

 Hartmann, L., and Stauffer, J. R. "Additional Measurements of Pre-Main Sequence 



150 



