BOKR, J.; JÁNEŠ, V. A Logic Object and its State. Acta Polytechnica, Prague, Czech Republic, v. 41, n. 3, 2001. DOI: 10.14311/234. Disponível em: https://ojs.cvut.cz/ojs/index.php/ap/article/view/234. Acesso em: 22 jan. 2025.