BOKR, J.; JÁNEŠ, V. State of a Logical Object. Acta Polytechnica, [S. l.], v. 46, n. 1, 2006. DOI: 10.14311/808. Disponível em: https://ojst.is.cvut.cz/ojs/index.php/ap/article/view/808.. Acesso em: 13 may. 2025.