« About the hysteresis-loop of the mechanical oscillators ». 2011. Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XIV, Inginerie mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering 18 (1): 35-38. https://ojs.ugal.ro/index.php/im/article/view/3760.