VINOD KUMAR, DR. ARVIND KUMAR BHARDWAJ. Positivity-Preserving Non-Standard Schemes For Nonlinear Partial Differential Equations. International Journal of Research & Technology, [S. l.], v. 14, n. S3, p. 119–124, 2026. Disponível em: https://ijrt.org/j/article/view/1412. Acesso em: 6 jun. 2026.