@article{03843103,
title = {On mixed finite element techniques for elliptic problems.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {6},
year = {1983},
pages = {755-766},
doi = {10.1155/S0161171283000642},
zbl = {0531.65055},
language = {en},
url = {http://dml.mathdoc.fr/item/03843103}
}
Noor, M.Aslam. On mixed finite element techniques for elliptic problems.. International Journal of Mathematics and Mathematical Sciences, Tome 6 (1983) pp. 755-766. doi : 10.1155/S0161171283000642. http://gdmltest.u-ga.fr/item/03843103/