@MScthesis {m-rgece-06} , author = "I. Haran" , title = "Robust, generic and efficient construction of envelopes of surfaces in three-dimensional space" , type = "MS.{C}. Thesis" , school = "Computer Science Department, Tel-Aviv University" , address = "Tel Aviv" , month = May. , year = 2006 , keywords = "master thesis" , update = "" }