Антонов, В. К., and О. М. лазок. “Method of Synthesis of Nonlinear Qualitative Regulators”. Proceedings of National Aviation University 16, no. 1 (March 29, 2003): 21–24. Accessed August 27, 2024. https://jrnl.nau.edu.ua/index.php/visnik/article/view/11623.