Joshi, Y. N.; Mazzoni, M.; Nencioni, A.; Parkinson, W. H.; and Cantii, A. 

 "Photoabsorption Spectrum of Atomic Sulphur." Journal of Physics B: Atomic and 

 Molec- ular Physics 20 (1987): 1203. 



Keller, H. U.; Arpigny, C; Barbieri, C; Bonnet, R. M.; Cazes, S.; Coradini, M 

 Cosmovici, C. B.; Curdt, W.; Delamere, W. A.; Huebner, W. F.; Hughes, D. W 

 Jamar, C; Kramm, R.; Malaise, D.; Reitsema, H.; Schmidt, H. U.; Schmidt, K 

 Schmidt, W. K. H.; Seige, P.; Whipple, F. L.; and Wilhelm, K. "Observations by 

 the Halley Multicolour Camera." In Proceedings of the 20th ESLAB Symposium on 

 the Exploration of Halley's Comet, ESA SP-250, eds. B. Battrick, E. J. Rolfe, and 

 R. Reinhard, vol. II, p. 347. Noordwijk, Holland: European Space Agency, 1986. 



Keller, H. U.; Delamere, W. A.; Heubner, W. F.; Reitsema, H.; Schmidt, H. U.; 

 Schmidt, W. K. H.; Whipple, F. L.; and Wilhelm, K. "Dust Activity of Comet 

 Halley's Nucleus." In Proceedings of the 20th ESLAB Symposium on the Exploration 

 of Halley's Comet, ESA SP-250, eds. B. Battrick, E. J. Rolfe, and R. Reinhard, vol. 

 II, p. 359. Noordwijk, Holland: European Space Agency, 1986. 



Kenyon, S. J. The Symbiotic Stars. Cambridge, England: Cambridge University Press, 

 1987. 



. "Recent Activity in Two Symbiotic Stars." Journal of the American Associ- 

 ation of Variable Star Observers 15 (1987): 173. 



Kenyon, S. J., and Fernandez-Castro, T. "The Cool Components of Symbiotic Stars I. 

 Optical Spectral Types." Astronomical Journal 93 (1987): 938. 



"Spectroscopic Observations of the Symbiotic Binary RW Hydrae." 



Astrophysical Journal 316 (1987): 427. 



Kenyon, S. J.; Fernandez-Castro, T.; and Stencel, R. E. "Far-Infrared Data for 

 Symbiotic Stars: I. The IRAS Pointed Observations." Astronomical Journal 92 

 (1986): 1118. 



Kenyon, S. J., and Wade, R. A. "Spectroscopic Observations of Nova PW Vulpeculae." 

 Publications of the Astronomical Society of the Pacific 98 (1986): 935. 



Kirby, K., and Heil, T. G. "A Molecular Representation of Al + + H Charge Transfer 

 Reactions." Journal of Chemical Physics 85 (1986): 6420. 



Kirshner, R. P.; Sonneborn, G.; Crenshaw, D. M.; and Nassiopoulos, G. E. "Ultraviolet 

 Observations of SN 1987A." Astrophysical Journal 320 (1987): 602. 



Lafyatis, G. P., and Kohl, J. L. "Measurement of Electron Impact Excitation in Boron- 

 Like Carbon." Physical Review A 36 (1987): 59. 



Lafyatis, G. P.; Kohl, J. L.; and Gardner, L. D. "Experimental Apparatus for 

 Measurements of Electron Impact Excitation." Review of Scientific Instruments 58 

 (1987): 383. 



Lawrence, A.; Watson, M. G.; Pounds, K. A.; and Elvis, M. "Low Frequency Divergent 

 X-Ray Variability in the Seyfert Galaxy NGC 4051." Nature 253 (1987): 694. 



Le Floch, A. C; Launay, F.; Rostas, J.; Field, R. W.; Brown, C. M.; and Yoshino, 

 K. "Reinvestigation of the CO A^Yl State and Its Perturbations: The v=0 Level." 

 Journal of Molecular Spectroscopy 121 (1987): 337. 



Lepp, S., and Dalgarno, A. "The Ionization Rate in Dense Interstellar Clouds." In 

 Astrochemistry, eds. M. S. Vardya and S. P. Tarafdar, p. 255. Dordrecht, Holland: 

 D. Reidel Publishing Company, 1987. 



Levreault, R.; and Opal, C. "CCD Observations of the Counterfan in PV Cephei." 



166 



