LUU BA THANG; NGUYEN DUC SANG. AN INTEGRAL REPRESENTATION OF THE PELL NUMBERS AND THE PELL-LUCAS NUMBERS. Journal of Science Natural Science, [S. l.], v. 70, n. 1, p. 15–21, 2025. DOI: 10.18173/2354-1059.2025-0002. Disponível em: https://hnuejs.edu.vn/ns/article/view/677. Acesso em: 5 dec. 2025.