found: Work cat.: Guo, B. Surface reconstruction using alpha shapes, 1997.
found: Computer aided geometric design, Nov. 1995:p. 649 (Alpha shapes are sequentially refined representations of suitably triangulated finite point sets in two and three dimensions)
found: Material forming processes, 2003:p. 25 ([alpha]-shapes are a generalization of the concept of the convex hull of a cloud of points and are widely used in the field of scientific visualization and computational geometry to give a shape to a set of points; an [alpha]-shape is a polytope that is not necessarily convex nor connected, being triangulated by a subset of the Delaunay triangulation of the points)
found: Color imaging X, 2005:p. 202 (Alpha shapes are a family of shapes controlled by some parameter [alpha], that choose certain simplices from the Delaunay triangulation)
found: Alpha shapes math principles, via WWW, Mar. 16, 2007(An alpha shape is a polytope)
