@base . a ; "1587-379X" ; . a ; "0324-6051" ; . a ; ; "20211201083700.0"^^ ; ; . . "Hungary" . a ; . a , ; "Periodica polytechnica. Mechanical engineering (Online)" . a , , ; , , ; "Periodica polytechnica" ; ; ; ; "1587-379X" ; ; ; "1587-379X" ; ; "1587-379X" ; "Periodica polytechnica" , "Periodica polytechnica. Mechanical engineering (Online)" ; ; "http://www.pp.bme.hu/me/" . a .