@Article{Ho-Le88,
author     ={Ho-Le, K.}, 
title      ={Finite Element Mesh Generation Methods: A Review and Classification},
journal    = { Computer Aided Design},
volume     = {1 (20)},
pages =  {27-38},
year = {1988} }

@Book{Mantila88,
author     = {M\"antil\"a, M.},
title      ={An Introduction to Solid Modeling},
publisher  = {Computer Science Press, Maryland},
year       ={1988}     }

@Article{watson,
author = {Watson, David F.},
title = {Computing the Delaunay Tesselation with Application to 
Voronoi Polytopes},
journal = {The Computer Journal},
volume = {24},
pages = {167-172},
year = {1981} }