Xalilov Qobiljon Solijonovich, Abdujabborov Abduxalim Abdug‘oppor o‘g‘li. TIP O‘ZGARISH CHIZIG‘I SILLIQ BO‘LMAGAN PARABOLO-GIPERBOLIK TENGLAMA UCHUN BIRINCHI NOLOKAL MASALA YECHIMINING YAGONALIGI. Euro. Jour. of Inte. Res. and Dev. [Internet]. 2023 May 27 [cited 2025 Apr. 19];15:220-8. Available from: http://ejird.journalspark.org/index.php/ejird/article/view/564