1.
CRESSON, Jacky, FREDERICO, Gastão S. F. and TORRES, Delfim F. M. Constants of motion for non-differentiable quantum variational problems. Topological Methods in Nonlinear Analysis. Online. 1 June 2009. Vol. 33, no. 2, pp. 217 - 231. [Accessed 14 December 2024].