@article{weko_60298_1,
   author	 = "Mamoru,Hosaka",
   title	 = "A Theory and Design of Free-Formed Surface",
   journal	 = "Information Processing in Japan",
   year 	 = "1967",
   volume	 = "7",
   number	 = "0",
   pages	 = "54--61",
   month	 = "jan"
}