Islamov Erkinjon Revkatovich. “BA’ZI FUNKSIYALARNING TO‘G‘RI BURCHAKLI TESKARI KOORDINATALAR SISTEMASIDAGI GRAFIKLARI”. World Scientific Research Journal, vol. 22, no. 1, Jan. 2024, pp. 163-9, http://wsrjournal.com/index.php/wsrj/article/view/2938.