@article{weko_60058_1,
   author	 = "Seiichi,Nishihara and Hiroshi,Hagiwara",
   title	 = "Performing Set Operations by Using Hashing Techniques",
   journal	 = "Information Processing in Japan",
   year 	 = "1977",
   volume	 = "17",
   number	 = "0",
   pages	 = "87--92",
   month	 = "jan"
}