Urunova Mashkhura Allamurodovna, Mavlonova Dilrabo Nizom qizi, and Rustamov Mamurjon Fazliddinovich. “MECHANISM AND PATHOLOGY OF HEART MUSCLE CONTRACTION”. Galaxy International Interdisciplinary Research Journal, vol. 12, no. 3, Mar. 2024, pp. 9-11, https://giirj.com/index.php/giirj/article/view/6581.