@inproceedings{r-cpaps-99 
, author = "S. Raab" 
, title = "Controlled perturbation for arrangements of polyhedral surfaces with application to swept volumes" 
, booktitle = Proc. 15th ACM Symposium on Computational Geometry" 
, site = "Miami" 
, year = 1999 
, pages = "163--172" 
}