On the Ludwig integration algorithm for triangular subregions. - M. L. X. Dos Santos; Nilson R. Rabelo (Proc. IEEE, 1986)

Scattering analysis of flat magnetic dipoles embedded in chiral multilayer structures. - Nilson R. Rabelo; Sidnei J. S. Sant'Anna; José Carlos Lacava; David Fernandes (IGARSS, 2012)