Sanetullayev, E. E., and K. S. Allanazarova. “Mahsuldor Qatlamlarni Ikkilamchi Ochishning Shartlari Va Tavsifi”. Science and Education, vol. 4, no. 1, Jan. 2023, pp. 312-7, https://openscience.uz/index.php/sciedu/article/view/4838.