@base . . a , ; "Contemporary Issues in Economy (Online)" . "Poland" . a ; . a ; "2544-2384" ; . a ; "2544-2384" ; . a . a ; ; "20210206233300.0"^^ ; ; . a , , ; , , ; "Contemporary Issues in Economy." ; ; ; ; "2544-2384" ; ; ; "2544-2384" ; ; "2544-2384" ; "Contemporary Issues in Economy (Online)" , "Contemporary Issues in Economy." ; ; "http://www.contemporary-issues.pl/index.php/pl/proceedings" .