Authors:
KILYACHKOV NN
SHEVCHENKO VS
YAKUBOV SD
EZHKOVA OV
KONDRATEV VB
PORTNOV DL
Citation: Nn. Kilyachkov et al., UBVR MONITORING OF HZ HER = HER X-1 - ON SHAPE VARIABILITY OF THE ACCRETION REGION AND OF THE HOT-SPOT IN THE SUBGIANT PHOTOSPHERE, Astronomy letters, 20(5), 1994, pp. 569-587