Borisenko A, Sukhorebska D. A classification of simple closed geodesics on regular tetrahedra in the Lobachevsky space . Dopov. Nac. akad. nauk Ukr. [Internet]. 2019 Apr. 28 [cited 2026 Jun. 19];(4):3-9. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/2171