VVEDENSKY, O. N. Indices of elliptical curves determined above a local field . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 23, n. 4, p. 516–520, 1971. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8585. Acesso em: 6 dec. 2025.