Prishlyak, O., and S. Stas’. “Topological Structure of Simple Pro-Hamiltonian Flows on the Möbius Strip”. Ukrains’kyi Matematychnyi Zhurnal, vol. 77, no. 9, Nov. 2025, pp. 584–589, https://doi.org/10.3842/umzh.v77i9.9029.