Peter Chow Tetsuyuki Kubota Takefumi Namiki A Multilevel-Multigrid Approach to Multiscale Electromagnetic Simulation. 34-40 2006 conf/iccS/2006-2 International Conference on Computational Science (2) http://dx.doi.org/10.1007/11758525_5 db/conf/iccS/iccS2006-2.html#ChowKN06