1.
Kuznietsova IV, Soroka YY. The first Betti numbers of orbits of Morse functions on surfaces. Ukr. Mat. Zhurn. [Internet]. 2021 Feb. 22 [cited 2025 Apr. 7];73(2):179-200. Available from:
https://umj.imath.kiev.ua/index.php/umj/article/view/2383