General catalogue of variable stars. Volume_III. Kukarkin, B. V. ; Kholopov, P. N. ; Pskovskij, Yu. P. ; Efremov, Yu. N. ; Kukarkina, N. P. ; Kurochkin, N. E. ; Medvedeva, G. I. ; Perova, N. B. ; Fedorovich, V. P. ; Frolov, M. S. Abstract Publication: General catalogue of variable stars. Volume_III Pub Date: 1971 Bibcode: 1971gcvs.book.....K