Authors
Cristina-Mihaela Cebuc
Department of Applied Mathematics, National University of Science and Technology Politehnica Bucharest, Bucharest, Romania
Savin Treanţă
Department of Applied Mathematics, National University of Science and Technology Politehnica Bucharest, Bucharest, Romania
Academy of Romanian Scientists, Bucharest, Romania
Fundamental Sciences Applied in Engineering - Research Center (SFAI), National University of Science and Technology Politehnica Bucharest, Bucharest, Romania