OkhrimenkoS. A. and TamrazovP. M. (1999) “Pairwise products of moduli of families of curves on a Riemannian Möbius strip”, Ukrains’kyi Matematychnyi Zhurnal, 51(1), pp. 110–116. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4587 (Accessed: 27July2024).