%0 Journal Article
%A Chen, Zhangxin
%T Expanded mixed finite element methods for linear second-order elliptic problems, I
%J ESAIM: Mathematical Modelling and Numerical Analysis 
%D 1998
%P 479-499
%V 32
%N 4
%I Elsevier
%U http://geodesic.mathdoc.fr/item/M2AN_1998__32_4_479_0/
%G en
%F M2AN_1998__32_4_479_0