@inproceedings{VMap07SPM,
 author = {X. Li and X. Guo and H. Wang and Y. He and X. Gu and H. Qin},
 title = {Harmonic volumetric mapping for solid modeling applications},
 booktitle = {Proc. ACM symp. on Solid and physical modeling},
 year = {2007},
 isbn = {978-1-59593-666-0},
 pages = {109-120},
}