Wagenknecht М. -, and U. - Gocht. “ON THE RELIABILITY OF MULTISTATE SYSTEMS WITH IMPRECISE PROBABILITIES”. Oil and Gas Power Engineering, no. 2(11) (November 18, 2009): 85–87. Accessed May 5, 2024. https://nge.nung.edu.ua/index.php/nge/article/view/224.