Chepkov, I.B., Lukhanin, M.I., Sirenko, V.Y. and Chernega, M.A. 2020. Features of the System Approach at Studydefense-Industrial Complex of Ukraine. Mechanics and Advanced Technologies. 1(88) (Apr. 2020), 156–165. DOI:https://doi.org/10.20535/2521-1943.2020.88.204631.