Alexei Sourin Olga Sourina Lei Wei Paul Gagnon Visual Immersive Haptic Mathematics in Shared Virtual Spaces. 1-19 2009 3 Transactions on Computational Science http://dx.doi.org/10.1007/978-3-642-00212-0_1 journals/tcos/2009-3 db/journals/tcos/tcos3.html#SourinSWG09