[1]
I. Vlasenko, “On the relations on the set of heteroclinic points of Morse-Smale diffeomorphisms on 2-manifolds”, MFAT, vol. 5, no. 3, pp. 90–96, Sep. 1999, Accessed: Dec. 17, 2025. [Online]. Available: https://zen.imath.kiev.ua/index.php/mfat/article/view/101