DONIYOR G’AFUROVICH RAYIMOV. FIRST-ORDER PARTIAL DIFFERENTIAL EQUATIONS AND THE METHOD FOR SOLVING THE CAUCHY PROBLEM ASSOCIATED WITH THEM. Ethiopian International Journal of Multidisciplinary Research, [S. l.], v. 13, n. 5, p. 1147–1149, 2026. Disponível em: https://eijmr.org/index.php/eijmr/article/view/6825. Acesso em: 19 may. 2026.