@incollection {jue:98f,
 author = {B. J{\"u}ttler},
 title = {Convex surface fitting with parametric {B}\'ezier surfaces},
 booktitle = {Mathematical methods for curves and surfaces II (M. D\ae hlen et al, eds.)},
 pages = {263--270},
 publisher = {Vanderbilt Univ. Press},
 address = {Nashville, TN},
 year = {1998}
}