\bibitem{Sapoval04}     B.~Sapoval, M.H.A.S.~Costa, J.S.~Andrade jr., M.~Filoche,
                        {\it Laplacian Transport towards Partially Passivated 2D Irregular Interfaces: 
                        A Conjectural Extension of the Makarov Theorem},
                        Fractals {\bf 12} (4), 381, 2004.