Dragos Ioan Sacaleanu, University Politehnica of Bucharest, Romania; Mihai Adamescu, University of Bucharest, Romania; Daniela Faur, University Politehnica of Bucharest, Romania; Constantin Cazacu, University of Bucharest, Romania; Bogdan Cristian Florea, Andreea Griparis, University Politehnica of Bucharest, Romania; Tudor Racoviceanu, Relu Constantin Giuca, University of Bucharest, Romania