Zimmermann, Robert (BLKÖ)[*][[Zimmermann, Robert (BLKÖ) (entry in the Biographisches Lexikon des Kaiserthums Oesterreich (vol. 60, p. 131))|]]Verificați valoarea |titlelink= (ajutor)
CONOR[*][[CONOR (authority control file for author and corporate names in Slovene system COBISS)|]]Verificați valoarea |titlelink= (ajutor)