“TIP O‘ZGARISH CHIZIG‘I SILLIQ BO‘LMAGAN PARABOLO-GIPERBOLIK TENGLAMA UCHUN BIRINCHI NOLOKAL MASALA YECHIMINING YAGONALIGI”. European Journal of Interdisciplinary Research and Development , vol. 15, May 2023, pp. 220-8, https://ejird.journalspark.org/index.php/ejird/article/view/564.