INNAMI, N.; ITOKAWA, Y.; NAGANO, T.; SHIOHAMA, K. Geodesic families characterizing flat metrics on a cylinder and a plane. MATHEMATICA SCANDINAVICA, [S. l.], v. 128, n. 2, 2022. DOI: 10.7146/math.scand.a-132247. Disponível em: https://www.mscand.dk/article/view/132247. Acesso em: 6 dec. 2022.