X.R. Umarov, A.M. Dodobayev, O.U. Abdurasulov. OʻLCHOVLI FUNKSIYALAR FAZOSI UCHUN DUALLIK PRINSIPI. MPC. 2025;(78 (том 1). Accessed June 14, 2026. https://mpcareer-google.ru/index.php/mpc/article/view/4381