Z. Banach and S. Piekarski, “Thermodynamic potentials and extremum principles for a Boltzmann gas”, Arch. Mech., vol. 48, no. 5, pp. 791–812, Jan. 1996, Accessed: Dec. 07, 2025. [Online]. Available: https://am.ippt.pan.pl/index.php/am/article/view/v48p791