DONELLI, A. Homological Relations Between Graphic-Geometric Descriptive / Projective Models. Principle of Virtual Works in Descriptive Geometry. img journal, [S. l.], v. 3, n. 4, p. 364–381, 2021. DOI: 10.6092/issn.2724-2463/12619. Disponível em: https://img-journal.unibo.it/article/view/12619. Acesso em: 24 oct. 2021.