Куралов, Бекжон. “The BLOCK DIAGRAM AND MATHEMATICAL MODEL OF AN INVARIANT SYSTEM: BLOCK DIAGRAM AND MATHEMATICAL MODEL OF AN INVARIANT SYSTEM”. Scientific and Technical Journal of Namangan Institute of Engineering and Technology 8, no. 3` (September 30, 2023): 175–183. Accessed October 23, 2024. http://niet.uz/index.php/nj/article/view/165.