Matkarimova U.U. “STANDART BUFER ERITMALAR ZICHLIK QIYMATLARINING PH KO’RSATGICHLAR ANIQLANISH SOHASIGA BOG’LIQLIGI”. European Journal of Interdisciplinary Research and Development, vol. 10, Dec. 2022, pp. 170-4, http://ejird.journalspark.org/index.php/ejird/article/view/245.