Carass, A., Cuzzocreo, J., Wheeler, M. B., Bazin, P.-L., Resnick, S. M., & Prince, J. L. (2011). Simple paradigm for extra-cerebral tissue removal: algorithm and analysis. Neuroimage, 56(4), 1982-1992. doi:10.1016/j.neuroimage.2011.03.045.