“Considerations on 2D Constraints for Drawings Made With Existing Design Software”. 2013. Analele Universităţii "Dunărea de Jos" Din Galaţi. Fascicula XIV, Inginerie Mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering 20 (2): 13-16. https://ojs.ugal.ro/index.php/im/article/view/3602.