UMAR, M. F.; MOHD SHAH, N. Newton’s Second Law on Positive Real Line R_+. Journal of Science and Mathematics Letters, [S. l.], v. 11, p. 158–162, 2023. DOI: 10.37134/jsml.vol11.sp.17.2023. Disponível em: https://ojs.upsi.edu.my/index.php/JSML/article/view/8756. Acesso em: 3 jul. 2024.