V. A. Babeshko, O. V. Evdokimova, and O. M. Babeshko, “On the theory of global factor influence on the strength of a set of parallel connections of layers”, ВМСС, vol. 9, no. 4, pp. 412–419, Dec. 2016, doi: 10.7242/1999-6691/2016.9.4.34.