@article{article562a4fce,
title   = {An adaptive method applied to the diffuse element approximation in optimization process},
author = {Costa, Maurício Caldora and Coulomb, Jean-Louis and Maréchal, Yves and Nabeta, Silvio Ikuyo},
year = {2001},
doi = {10.1109/20.952627},
journal   = {IEEE Transactions on Magnetics}
}