1. On approximations of holomorphic semigroups;Baker,1978
2. Single step Galerkin approximations for parabolic problems;Baker;Math. Comput.,1977
3. Approximate solution of elliptic and parabolic boundary value problems;Blair,1970
4. On rational approximations of semigroups;Brenner;SIAM J. Numer. Anal.,1979
5. Une Inégalité;Carlson;Ark. Mat.,1935