1. Proceedings of the 6th Conference on Numerical Simulation of Plasmas;Nielson,1973
2. A mixed finite element for 2nd order elliptic problems;Raviart,1977
3. Sur l'analyse numérique des méthodes d'éléments finis hybrides et mixtes;Thomas;Thèse,1977
4. Functional analysis;Yosida,1974
5. General Lagrange and Hermite interpolation in |Rn with applications to finite element methods;Ciarlet;Arch. Rat. Mech. Anal.,1972