@article{weko_81618_1,
   author	 = "Takayuki,Koai and Makoto,Tatsuta",
   title	 = "Verification of Substitution Theorem Using HOL",
   journal	 = "情報処理学会論文誌プログラミング（PRO）",
   year 	 = "2012",
   volume	 = "5",
   number	 = "2",
   pages	 = "88--96",
   month	 = "mar"
}