@base . a , ; "Information bulletin on variable stars (Online)" . a ; "0374-0676" ; . a ; ; "20230606101046.095886"^^ ; ; . a , , ; , , ; "Information bulletin on variable stars." ; , ; ; ; "1587-2440" ; , ; ; "1587-2440" ; ; "1587-2440" ; "Information bulletin on variable stars." , "Information bulletin on variable stars (Online)" ; ; "http://www.konkoly.hu/IBVS/IBVS.html" . "Hungary" . a ; "1587-2440" ; . . a ; . a .