V. N. Frolov, Yu. K. Ananjevskaja, E. V. Polyakov:Investigation of the Open Star Cluster NGC 2323 (M50) Based on the Proper Motions and Photometry of Its Constituent Stars. In: Astronomy Letters. Band38, Nr.2, 1.Februar 2012, ISSN1063-7737, doi:10.1134/S106377371202003X (researchgate.net[abgerufen am 28.Juli 2016]).
V. N. Frolov, Yu. K. Ananjevskaja, E. V. Polyakov:Investigation of the Open Star Cluster NGC 2323 (M50) Based on the Proper Motions and Photometry of Its Constituent Stars. In: Astronomy Letters. Band38, Nr.2, 1.Februar 2012, ISSN1063-7737, doi:10.1134/S106377371202003X (researchgate.net[abgerufen am 28.Juli 2016]).
V. N. Frolov, Yu. K. Ananjevskaja, E. V. Polyakov:Investigation of the Open Star Cluster NGC 2323 (M50) Based on the Proper Motions and Photometry of Its Constituent Stars. In: Astronomy Letters. Band38, Nr.2, 1.Februar 2012, ISSN1063-7737, doi:10.1134/S106377371202003X (researchgate.net[abgerufen am 28.Juli 2016]).