CRESSON, Jacky; FREDERICO, Gastão S. F.; TORRES, Delfim F. M. Constants of motion for non-differentiable quantum variational problems. Topological Methods in Nonlinear Analysis, [S. l.], v. 33, n. 2, p. 217–231, 2009. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2009.015. Acesso em: 1 jul. 2025.