Doniyor G’afurovich Rayimov. “‘FIRST-ORDER PARTIAL DIFFERENTIAL EQUATIONS AND THE METHOD FOR SOLVING THE CAUCHY PROBLEM ASSOCIATED WITH THEM’”. International Multidisciplinary Journal for Research & Development 13, no. 4 (April 22, 2026): 1557–1560. Accessed April 23, 2026. https://www.ijmrd.in/index.php/imjrd/article/view/5876.