A. E. Radu, P. Alexe, S.Padure, A. Macri, N.Belc,
Annals of the University ”Dunărea de Jos” of Galati, Fascicle II, Mathematics, Physics,Theoretical Mechanics. 2018, vol.41, Issue 2, p 229-236
A. E. Radu, P. Alexe, S.Padure, A. Macri, N.Belc,
Annals of the University ”Dunărea de Jos” of Galati, Fascicle II, Mathematics, Physics,Theoretical Mechanics. 2018, vol.41, Issue 2, p 229-236