Ares de Parga, G. and Santillán, M. (1998) “A variational approach to some properties of endoreversible heat engines”, Revista Mexicana de Física, 44(4), pp. 373–376. Available at: https://rmf.smf.mx/ojs/index.php/rmf/article/view/2781 (Accessed: 25 November 2024).