[1]
E. P. Pavlenko, N. A. Ketsaris, A. V. Halevin, і I. L. Andronov, «LIGHT CURVE VARIATIONS OF THE MAGNETIC CATACLYSMIC BINARY MR SERPENTIS : PHOTOMETRIC PERIOD IS NOT AS SURE AS BELIEVED», Одес. астроном. публ., т. 7, вип. 1, с. 121–123, Лип 2017.