Marcos Lage, Alex Laier Bordignon, Fabiano Petronetto, Alvaro Veiga, Geovan Tavares, Thomas Lewiner, Hélio Lopes. Approximations by Smooth Transitions in Binary Space Partitions. In SIBGRAPI 2008, Proceedings of the XXI Brazilian Symposium on Computer Graphics and Image Processing, Campo Grande, Brazil, 12-15 October 2008. pages 230-236, IEEE Computer Society, 2008. [doi]