References

• Barlow M.J., Drew J.E., Meaburn J., Massey R.M., 1994, MNRAS 268, L29 NASA ADS
• Cranmer S.R., Owocki S.P., 1996, ApJ 462, 469 NASA ADS
• de Jager C., 1980, The Brightest Stars, 60
• de Groot M., 1969, Bull. Astron. Inst. Netherl. 20, 225 NASA ADS
• Fullerton A.W., Gies D.R., Bolton C.T., 1996, ApJS 103, 425
• Fullerton A.W., Massa D.L., Prinja R.K., et al., 1997, A&A 327, 699 NASA ADS
• Henrichs H.F., Kaper L., Nichols J.S., 1994, A&A 285, 565 NASA ADS
• Hayes D.P., 1985, ApJ 289, 726 NASA ADS
• Hoffleit D., Jaschek C., 1982, The Bright Star Catalogue, 4th edition, Yele University Observatory, New Haven
• Israelian G., de Groot M., 1992, in Nonisotropic and Variable Outflows from Stars, Drissen L., Leitherer C., Nota A. (eds.) ASPC Ser. 22, 356
• Israelian G., 1995, A&A 300, 834 NASA ADS
• Israelian G., de Groot M., Parker J.Wm., Sterken C., 1996, MNRAS 937, 230
• Israelian G., de Groot M., 1999, SSR 90, 493
• Kaper H.E., et al., 1996, A&AS 116, 257 NASA ADS
• Kaper H.E., Henrichs H.F., Fullerton A.W., et al., 1997, A&A 327, 281 NASA ADS
• Kaper H.E., Henrichs H.F., Nichols J.S., Telting J.H., 1998, ESO preprint No. 1311
• Kiriakidis M., Pricke K.J., Glatzer W., 1993, MNRAS 264, 50 NASA ADS
• Kolka I., 1989, in "Physics of Luminous Blue Variables'', IAU Coll. 113, Davidson K., Moffat A.F.J., Lamers H.J.G.L.M. (eds.). Kluwer, Dordrecht, p. 265
• Kolka I., 1991, Workshop on "The atmospheres of early-type stars'', Heber U., Jeffery C.S. (eds.), Lect. Notes Phys. 401, 125. Springer, Berlin
• Kuss C., Duemmler R., 1995, Astron. Gess., Abst. Ser., No. 9, 136
• Lamers H.J.G.L.M., 1986, in "Luminous Stars and Associations in Galaxies'', IAU Symp. 116, de Loore C. and Willis A. (eds.). Reidel, Dordrecht
• Lamers H.J.G.L.M., de Groot M., Cassatella A., 1983, A&A 128, 299 NASA ADS
• Lamers H.J.G.L.M., Bastiaanse C., Aerts C., Spoon H.W.W., 1998, A&A 335, 605 NASA ADS
• Luud L., 1967a, Sov. Astr. 11, 211 NASA ADS
• Luud L., 1967b, Dokl. Akad. Nauk Armenianskoi SSR 3, 379
• Markova N., 1986a, A&SS 123, 5
• Markova N., 1986b, A&A 162, L3 NASA ADS
• Markova N., 1991, Ph.D. Thesis, Institute of Astronomy, National Astronomical Observatory
• Markova N., 1993, A&A 273, 555 NASA ADS
• Markova N., de Groot M., 1997, A&A 326, 1111 NASA ADS
• Markova N., Scuderi S., de Groot M., 1998, IAU Coll. 169, Heidelberg, Germany
• Markova N., Morrison N., de Groot M., Kolka I., 2000a (in preparation)
• Markova N., Scuderi S., de Groot M., Panagia N., 2000b (submitted to A&A)
• Massa D., Prinja R.K., Fullerton A.W., 1995, ApJ 452, 842 NASA ADS
• Mullan D.J., 1984, ApJ 283, 303 NASA ADS
• Mullan D.J., 1986, A&A 165, 157 NASA ADS
• Percy J.R., Attard A., Szczesny M., 1996, A&ASS 177, 255
• Pauldrach A.W.A., Puls J., 1990, A&A 237, 409
• Prinja R.K., Balona L.A., Bolton C.T., et al., 1992, ApJ 390, 266 NASA ADS
• Prinja R.K., Massa D., Fullerton A.W., 1995, ApJ 452, L62
• Prinja R.K., Fullerton A.W., Crowther P.A., 1996, A&A 311, 264 NASA ADS
• Skinner C.J., Exter K.M., Barlow M.J., et al., 1997, MNRAS 288, L7 NASA ADS
• Stahl O., Mandel H., Szeifert Th., et al., 1991, A&A 244, 467 NASA ADS
• Stahl O., Wolf B., Gäng Th., et al., 1994, A&AS 107, 1 NASA ADS
• Taylor M., Nordsieck R.E., Schulte-Ladbeck R., et al., 1991, AJ 102, 1197 NASA ADS
• Vakili F., Mourard D., Bonneau F., et al., 1997, A&A 323, 183 NASA ADS
• Van den Oord G.H.J., Waters L.B.F.M., Lamers H.J.G.L.M., et al., 1985, in "Radio Stars'', Hjellming R.M., Gibson D.M. (eds.). Reidel, Dordrecht, p. 111
• Van Gent, Lamers H.J.G.L.M., 1986, A&A 158, 335 NASA ADS