Żołądek, Henryk. “Note on the Deck Transformations Group and the Monodromy Group”. Topological Methods in Nonlinear Analysis 19, no. 2 (June 1, 2002): 237–256. Accessed December 13, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2002.012.