@article{M2AN_2014__48_4_1227_0,
     author = {Brezzi, F. and Falk, Richard S. and Donatella Marini, L.},
     title = {Basic principles of mixed {Virtual} {Element} {Methods}},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {1227--1240},
     publisher = {EDP-Sciences},
     volume = {48},
     number = {4},
     year = {2014},
     doi = {10.1051/m2an/2013138},
     mrnumber = {3264352},
     zbl = {1299.76130},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/m2an/2013138/}
}