WRZESIŃSKI, Z. The Substantial Balance of Internal Energy (IE) for Extensive Quantities as Viewed by the Balance Theory. Engineering Transactions, [S. l.], v. 50, n. 1-2, p. 81–90, 2015. DOI: 10.24423/engtrans.510.2002. Disponível em: https://et.ippt.pan.pl/index.php/et/article/view/510. Acesso em: 24 jul. 2025.