Okhrimenko SA, Tamrazov PM. Pairwise products of moduli of families of curves on a Riemannian Möbius strip. Ukr. Mat. Zhurn. [Internet]. 1999Jan.25 [cited 2024Jul.27];51(1):110–116. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4587