UDRISTE, Constantin; TEVY, Ionel. Properties of Hamiltonian in free final multitime problems. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 66, n. 1, p. 223–240, 2021. DOI: 10.24193/subbmath.2021.1.18. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1283. Acesso em: 19 apr. 2025.