On a class of saddle Point Problems and convergence Results. - Mariana Chivu Cojocaru; Andaluzia Matei (Math. Model. Anal., 2020)

Weak solutions via two-field Lagrange Multipliers for boundary Value Problems in Mathematical Physics. - Mariana Chivu Cojocaru; Andaluzia Matei (Math. Model. Anal., 2022)