Dilshodov , Abrorjon, и Ismatilla To’xtamamatov. 2026. «Relyatsion Model. Relyatsion Algebra, Asosiy Operatsiyalar. Munosabatlar Nazariyasi». Research and Implementation 2 (5/2):16-21. https://rai-journal.uz/index.php/rai/article/view/3008.