@base . a . , ; "HWWI research." ; ; ; ; ; "HWWI research. Paper" , "HWWI research." ; ; "http://www.hwwi.org/publikationen/hwwiresearch.htm" . a , ; "HWWI research. Paper" . a ; "20240104133112.462711"^^ ; ; . a ; . a ; "1861-504X" ; . . "Germany" .