Toshmatova, Maftuna, и Zuhraxon Xolmatova. «Ikkinchi Tartibli Chiziqli Bir Jinsli Differensial Tenglamalar». Research and Implementation 4, no. 5/3 (май 23, 2026): 168–169. просмотрено май 26, 2026. https://rai-journal.uz/index.php/rai/article/view/3129.