Emilio Vital Brazil Ives Macedo Mario Costa Sousa Luiz Henrique de Figueiredo Luiz Velho Sketching Variational Hermite-RBF Implicits. 1-8 2010 SBM http://dx.doi.org/10.2312/SBM/SBM10/001-008 conf/sbm/2010 db/conf/sbm/sbm2010.html#BrazilMSFV10