Ferreiro Garcia, Ramon, and Dr. Jose Carbia Carril. “Analysis of a Thermal Cycle That Surpass Carnot Efficiency Undergoing Closed Polytropic Transformations”. JOURNAL OF ADVANCES IN PHYSICS 15 (February 19, 2019): 6143–6161. Accessed May 11, 2024. https://rajpub.com/index.php/jap/article/view/8029.