Carlo Arcelli Gabriella Sanniti di Baja Luca Serino The <2, 4, 5> Curvilinear Skeleton. 409-420 2009 DGCI http://dx.doi.org/10.1007/978-3-642-04397-0_35 conf/dgci/2009 db/conf/dgci/dgci2009.html#ArcelliBS09