Maxim A. Olshanskii Arnold Reusken On the Convergence of a Multigrid Method for Linear Reaction-Diffusion Problems. 193-202 2000 65 Computing 3 http://link.springer.de/link/service/journals/00607/bibs/0065003/00650193.htm db/journals/computing/computing65.html#OlshanskiiR00