M. M. Morín - Castillo, J. J. Oliveros - Oliveros, J. J. Conde - Mones, A. Fraguela - Collar, E. M. Gutiérrez - Arias, and E. Flores . Mena, “Simplification of the inverse electroencephalographic problem to one homogeneous region with null Neumann condition”, Rev Mex Ing Biom, vol. 34, no. 1, pp. 41–51, Jan. 2013.