Корнійчук, М. Т., Романов, О. І., Совтус, І. К. and Шутко, М. О. (2000) “Risk and reliability. The alternative of categories and problems of their formalization”, Proceedings of National Aviation University, 7(3-4), pp. 306–309. doi: 10.18372/2306-1472.7.11308.