@inproceedings{Galyean:1991:SAI,
author = "Tinsley A. Galyean and John F. Hughes",
title = "Sculpting: An interactive volumetric modeling technique",
year = "1991",
month = jul,
booktitle = "Computer Graphics (Proceedings of SIGGRAPH 91)",
volume = "25",
number = "4",
pages = "267--274",
}