@article{weko_59936_1,
   author	 = "Kohei,Noshita and WilliamF.Mccoll",
   title	 = "On the Cardinality Predicting Problems of Set Operations",
   journal	 = "Journal of Information Processing ",
   year 	 = "1983",
   volume	 = "5",
   number	 = "4",
   pages	 = "251--255",
   month	 = "dec"
}