1. G.E. Bredon, Topology and Geometry. Graduate Texts in Mathematics, vol. 139 (Springer, New York, 1997). Corrected third printing of the 1993 original. MR 1700700
2. Historia jednej gry, od HODOWLI ZWIERZATEK do RANCHO (1943–2012).https://www.youtube.com/watch?v=kfMW8X_5tY
3. Innsbruck informiert, 2002 Nr. 05, p. IV.http://www.literature.at/viewer.alo?objid=1031520&viewmode=fullscreen&scale=333&rotate=&page=16
4. Innsbruck informiert, 1997 Nr. 01, p. 1.https://issuu.com/innsbruckinformiert/docs/_innsbruck_informiert_199701_nr01_gesamt/13
5. Innsbrucker Nachrichten, September 13th, 1928, p. 4.https://anno.onb.ac.at/cgi-content/anno?apm=0&aid=ibn&datum=19280913&seite=4