H. Ismail, T., طاهر, O. Hamad, I., & إبراهیم. (2025). A Generalized Curvature of a Generalized Envelope. AL-Rafidain Journal of Computer Sciences and Mathematics, 6(2), 39–47. Retrieved from https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19378