References

 
• Aznar Cuadrado, R. 2001, Ph.D. Thesis, Queens University Belfast, submitted  
• Aznar Cuadrado, R., & Jeffery, C. S. 2001, A&A, 368, 994 NASA ADS  
• Bidelman, W. P. 1949, ApJ, 109, 544 NASA ADS  
• Campbell, W. W. 1899, ApJ, 10, 241 NASA ADS  
• Downes, R., Webbink, R. F., & Shara, M. M. 1997, PASP, 109, 345 NASA ADS  
• Dudley, R. E., & Jeffery, C. S. 1990, MNRAS, 247, 400 NASA ADS  
• Dudley, R. E., & Jeffery, C. S. 1993, MNRAS, 262, 945 NASA ADS  
• Ferguson, D. H., Green, R. F., & Liebert, J. 1984, ApJ, 287, 320 NASA ADS  
• Frame, D. J., et al. 1995, MNRAS, 276, 383 NASA ADS  
• Greenstein, J. L. 1943, ApJ, 97 252 NASA ADS  
• Greenstein, J. L. 1950, AJ, 55, 72 NASA ADS  
• Hack, M. 1960, Contr. Milano Merate Obs., No. 215  
• Jeffery, C. S. 1991, CCP7 Newslett., No. 16, 16  
• Jeffery, C. S., & Pollacco, D. 1998, MNRAS, 298, 179 NASA ADS  
• Jeffery, C. S., Drilling, J. S., & Heber, U. 1987, MNRAS, 226, 317 NASA ADS  
• Jeffery, C. S., Lester, J., & Short, I. 1996, CCP7 Newslett., No. 24, 13  
• Jeffery, C. S., Woolf, V. M., & Pollacco, D. L. 2001, A&A, 376, 497 NASA ADS  
• Kazarovets, E. V., Samus, N. N., & Goranskij, V. P. 1993, IBVS, 3840  
• Kuczawska, E., Mikolajewski, M., & Kirejczyk, K. 1993, IBVS, 3845  
• Kurucz, R. L. 1979, ApJS, 40, 1 NASA ADS  
• Kurucz, R. L. 1993, SAO KURUCZ CD-ROM, No. 18  
• Kurucz, R. L. 1991, in Stellar Atmospheres: Beyond Classical Models, ed. L. Crivellari, I. Hubeny, & D. G. Hummer, NATO ASI Ser., vol. C341 (Kluwer, Dordrecht), 441  
• Lipunova, N. A., & Shugarov, S. Yu. 1990, JAVSO, 19, 40 NASA ADS  
• Lipunova, N. A., & Shugarov, S. Yu. 1991, IBVS, 3580  
• Liu, W., Hu, J. Y. 2000, ApJS, 128, 387 NASA ADS  
• Lynas-Gray, A. E., Kilkenny, D., Skillen, I., & Jeffery, C. S. 1987, MNRAS, 227, 1073 NASA ADS  
• Nariai, K. 1967, PASJ, 19, 564 NASA ADS  
• Nariai, K. 1972, PASJ, 24, 495 NASA ADS  
• Orosz, J. A., Wade, R. A., & Harlow, J. J. B. 1997, AJ, 114, 317 NASA ADS  
• Rauch, T. 1996, Hydrogen Deficient Stars, ed. C. S. Jeffery, & U. Heber, ASP Conf. Ser., 96, 174  
• Ritter, H., & Kolb, U. 1998, A&AS, 129, 83 NASA ADS  
• Saio, H. 1995, MNRAS, 277, 1393 NASA ADS  
• Schönberner, D. 1983, ApJ, 272, 708 NASA ADS  
• Schönberner, D., & Drilling, J. S. 1983, ApJ, 268, 225 NASA ADS  
• Seydel, F. L. 1929, Publ. Amer. Astr. Soc., 6, 278  
• Wade, R. A. 1980, Ph.D. Thesis, California Institute of Technology  
• Wade, R. A., & Potter, D. 1995, BAAS 27Q.877 NASA ADS  
• Walker, H. J., & Schönberner, D. 1981, A&A, 97, 291 NASA ADS  
• Wilson, R. E. 1914, Lick Obs. Bull., 8, 132