Berdiev, Rustam Karjavovich. “Modelling of Nonlinear Problem Masstransfer in Three-Layer System”. International Journal Of Mathematics And Computer Research 9, no. 10 (October 28, 2021): 2439-2442. Accessed May 19, 2026. https://www.ijmcr.everant.org/index.php/ijmcr/article/view/349.