Toshmatova, Maftuna, и Zuhraxon Yormuhammedova. «N-Tartibli Differensial Tenglamalar Hamda Yuqori Tartibli Differensial Tenglamalarni Yechishning Koshi Usuli». Research and Implementation, т. 4, вып. 5/3, май 2026 г., сс. 162-3, https://rai-journal.uz/index.php/rai/article/view/3126.