PRATHAP, T.; NAGESHWAR RAO, R. Exponentially fitted finite difference methods for a singularly perturbed nonlinear differential-difference equation with a small negative shift. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 118, n. 2, p. 189–207, 2025. DOI: 10.31489/2025m2/189-207. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/759. Acesso em: 10 jul. 2025.