@article{weko_12031_1,
   author	 = "Takashi,Hirayama and Kazuyuki,Nagasawa and Kensuke,Shimizu",
   title	 = "Fixed-Polarity OR-AND-EXOR Expressions and Their Minimization",
   journal	 = "情報処理学会論文誌",
   year 	 = "2001",
   volume	 = "42",
   number	 = "4",
   pages	 = "992--995",
   month	 = "apr"
}