Harmanec, P., Horn, J., Koubsky, P., Zdarsky, F., Kriz, S., Pavlovski, K.: Photoelectric photometry at the Hvar Observatory. IV - A study of UBV variations of a group of bright northern Be stars. Bulletin of the Astronomical Institutes of Czechoslovakia, 1980, nro 31. ISSN 0004-6248Artikkelin verkkoversio. (englanniksi)
Harmanec, P., Horn, J., Koubsky, P., Zdarsky, F., Kriz, S., Pavlovski, K.: Photoelectric photometry at the Hvar Observatory. IV - A study of UBV variations of a group of bright northern Be stars. Bulletin of the Astronomical Institutes of Czechoslovakia, 1980, nro 31. ISSN 0004-6248Artikkelin verkkoversio. (englanniksi)