Mahamadiyeva Aziza Sherali qizi, and Tursinova Sokhiba Ravshon qizi, Khojakulova Nozima Abduhamid qizi. 2026. “DIVISIBILITY RULES FOR 13: MATHEMATICAL PROOFS AND PRACTICAL ALGORITHMS”. Ethiopian International Multidisciplinary Research Conferences 3 (2):108-9. https://eijmr.org/conferences/index.php/eimrc/article/view/2234.