BLIZNIKIENĖ, I. On the local theory of geodesic curves congruence in the Euclidian connections spaces. Lithuanian Mathematical Journal, [S. l.], v. 2, n. 1, p. 17–24, 1962. DOI: 10.15388/LMJ.1962.19296. Disponível em: https://www.journals.vu.lt/LMJ/article/view/19296.. Acesso em: 4 may. 2024.