LEIKO, S. G.; FEDCHENKO, Yu. S. Infinitesimal Rotary Deformations of Surfaces and Their Application to the Theory of Elastic Shells. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 55, n. 12, p. 1697–1703, 2003. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4031. Acesso em: 5 dec. 2025.