2014. The friction force dependence at simple pendulum sliders by relative speed and temperature of the surfaces in contact. Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XIV, Inginerie mecanică = Annals of “Dunarea de Jos“ University of Galati. Fascicle XIV, Mechanical Engineering. 21, 2 (Okt. 2014), 31–34.