APA (7th ed.) Citation
Ölander, V. (1959). Proper Motions of 41 variable stars in the photographic zone of Helsinki observatory.
Chicago Style (17th ed.) Citation
Ölander, V.R. Proper Motions of 41 Variable Stars in the Photographic Zone of Helsinki Observatory. 1959.
MLA (9th ed.) Citation
Ölander, V.R. Proper Motions of 41 Variable Stars in the Photographic Zone of Helsinki Observatory. 1959.
Warning: These citations may not always be 100% accurate.