Goanță, Adrian. Considerations on 2D Constraints for Drawings Made With Existing Design Software. Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XIV, Inginerie mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering 20, no. 2 (Oktober 8, 2013): 13-16. Zugegriffen April 19, 2025. https://gup.ugal.ro/ugaljournals/index.php/im/article/view/3602.