“Non-Linear Dynamic Behavior of a Ball Float Valve”. 2012. Analele Universităţii "Dunărea de Jos" Din Galaţi. Fascicula XIV, Inginerie Mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering 19 (2): 17-22. https://ojs.ugal.ro/index.php/im/article/view/3721.