Olga Kršnjavi (1898-1985) (mother) ; further relatives, cf. https://www.geni.com/people/Mladen-Josef-Anschau-dr-sc/6000000019493612584 ; ....
zoology at the university of Zagreb (Agram) and Graz ;
Austria
Hygieneinstitut of the University of Graz ; Makatsch, Wolfgang (1906-1983): Die Vögel in Haus, Hof und Garten (Radebeul: Neumann-Verlag, 1956, 5th edition: 1968) ;
a group of Austrian ornithologists (Wolfgang Bernhauer (1932-2013), Hildegarda Exner (1921-1983), Otto Kepka (1926-1996), E. Pichlmayer, Horst Schönbeck, Heribert Skringer († 2022 ?), and Josef Subaric (1929-1993)).
