POPST, Hans. Nachruf auf Dr. Rupert Hacker (1935–2016). o-bib, [S. l.], v. 3, n. 4, p. 350–352, 2016. DOI: 10.5282/o-bib/2016H4S350-352. Disponível em: https://o-bib.de/index.php/bib/article/view/2016H4S350-352. Acesso em: 14 nov. 2026.