Mathematical problems of computational decisions in the finite element method -- Estimations dโ{128}{153}Erreur dans L? pour les Inequations a Obstacle -- Hybrid methods for fourth order elliptic equations -- Variational techniques for the analysis of a lubrication problem -- Interior L? estimates for finite element approximations of solutions of elliptic equations -- H1-galerkin methods for a nonlinear dirichlet problem -- Discretization of rotational equilibrium in the finite element method -- Integration techniques for solving algebraic systems -- On the application of the minimum degree algorithm to finite element systems -- Methodes dโ{128}{153}Elements Finis en Viscoelasticite Periodique -- On solving a mixed finite element approximation of the dirichlet problem for the biharmonic operator by a "quasi-direct" method and various iterative methods -- Sur lโ{128}{153}Approximation de Problems a Frontiere Libre dans les Materiaux Inhomogenes -- Sur les Problemes Variationnels Noncoercifs et lโ{128}{153}Equation du Transport -- Application of a mixed finite element method to a nonlinear problem of elasticity -- Error estimates for some variational inequalities -- Certains Problems non Lineaires de la Physique des Plasmas -- L?-convergence of finite element approximations -- Dual-Mixed Hybrid finite element method for second-order elliptic problems -- A mixed finite element method for 2-nd order elliptic problems -- The influence of the choice of connectors in the finite element method -- Some error estimates in Galerkin methods for parabolic equations -- Some superconvergence results in the finite element method