PETRUŠKEVIČIŪTĖ, D. Completely geodetic families of space curves order three. Lithuanian Mathematical Journal, [S. l.], v. 3, n. 2, p. 115–121, 1963. DOI: 10.15388/LMJ.1963.19455. Disponível em: https://www.journals.vu.lt/LMJ/article/view/19455. Acesso em: 12 may. 2025.