@inproceedings{Yen:2001:ESC,
  opteditor = {},
  optorganization = {},
  author = {Jane Yen and Carlo S{\'{e}}quin},
  optkey = {},
  optannote = {},
  optseries = {},
  url = {http://members.frys.com/~marimba/Jane/UCB/eschersphere.html},
  address = {New York},
  localfile = {papers/Yen.2001.ESC.pdf},
  publisher = {ACM Press},
  doi = {http://doi.acm.org/10.1145/364338.364371},
  optmonth = {},
  citeseer = {http://citeseer.nj.nec.com/yen01escher.html},
  optcrossref = {},
  booktitle = {Proceedings of the ACM Symposium on Interactive 3D Graphics, I3D
               2001},
  optstatus = {doi},
  optvolume = {},
  optnumber = {},
  abstract = {M.C. Escher created a myriad of amazing planar tessellations, yet
              only a few three-dimensional ones such as his wooden fish ball and
              dodecahedral flower. We have developed an interactive program to
              design and manufacture ``Escher Spheres'' -- sets of tiles that
              can be assembled into spherical balls. The user chooses from a set
              of predefined symmetry groups and then deforms the boundaries of
              the basic domain tile; all corresponding points based on the
              chosen symmetry class move concurrently, instantly showing the
              overall result. The interior of the tile can be embellished with a
              bas-relief. Finally the tile is radially extruded and output as a
              solid model suitable for free-form fabrication.},
  title = {{E}scher {S}phere {C}onstruction {K}it},
  year = {2001},
  pages = {95--98},
}