@article{M2AN_1977__11_4_341_0, author = {Fortin, Michel}, title = {An analysis of the convergence of mixed finite element methods}, journal = {RAIRO. Analyse num\'erique}, pages = {341--354}, publisher = {Centrale des revues, Dunod-Gauthier-Villars}, address = {Montreuil}, volume = {11}, number = {4}, year = {1977}, zbl = {0373.65055}, mrnumber = {464543}, language = {en}, url = {http://www.numdam.org/item/M2AN_1977__11_4_341_0/} }