Percoco, U., Nuñez, L. A., & Zambrano, M. (2007). The Classical Isotropic bi-Dimensional Oscilator in the Eisenhart Formulation of Classical Mechanics. Revista Integración, Temas De matemáticas, 25(1), 39–44. Recuperado a partir de https://revistas.uis.edu.co/index.php/revistaintegracion/article/view/261