JOHN R. GRAEF. Canonical, Noncanonical, and Semicanonical Third Order Dynamic Equations on Time Scales. Results in Nonlinear Analysis, [S. l.], v. 5, n. 3, p. 273–278, 2022. Disponível em: https://nonlinear-analysis.com/index.php/pub/article/view/106. Acesso em: 24 nov. 2024.