Li J C. Optimal convergence analysis of mixed finite element methods for fourth-order elliptic and parabolic problems[J]. Numer. Meth. for Partial Differential Equations, 2006, 22(4): 884-896.
Pani A K. An H1-Galerkin mixed finite element methods for parabolic partial differential equations[J].SIAM J. Numer. Anal., 1998, 35(2): 721-727.
[12]
Pani A K, Fairweather G. H1-Galerkin mixed finite element methods for parabolic partial integro-differential equations[J].IMA J. Numer. Anal., 2002,22(2): 231-252.
[13]
Pani A K, Sinha R K, Otta A K. An H1-Galerkin mixed method for second order hyperbolic equations[J]. Int. J. Numer. Anal. Model., 2004, 1(2): 111-129.
[14]
Guo L, Chen H. H1-Galerkin mixed finite element method for the regularized long wave equation[J].Computing, 2006, 77(2):205-221.