Xatamov Xumoyun Isroilovich, Usmonov Isroiljon Muxtorjon o’g’li, and Xatamova Durdona Ahadjon qizi. 2023. “HEAT CAPACITY OF SOLIDS. DULONG - PTI LAW. EINSTEIN-DEBAY THEORY”. Academia Science Repository 4 (5):620-23. http://academiascience.com/index.php/repo/article/view/639.