Nashwan, Imad I. H. “ Reliability and Failure Probability Functions of the M-Consecutive-K-Out-of-N: F Linear and Circular Systems”. Baghdad Science Journal 18, no. 2 (June 1, 2021): 0430. Accessed July 31, 2021. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/5023.