Alsayd, Fatimah. “Derivation the Availability of a System With One Unit in Normal and Abnormal Weather Conditions by Using Laplace Transform With Application to Case of Normal Weather: Mathematical Statistics”. JOURNAL OF ADVANCES IN MATHEMATICS 21 (December 11, 2022): 192–198. Accessed November 23, 2024. https://rajpub.com/index.php/jam/article/view/9306.