@article{weko_95622_1,
   author	 = "Kenichiro,Nakai and Yasuhiko,Takenaga",
   title	 = "NP-Completeness of Pandemic",
   journal	 = "Journal of information processing",
   year 	 = "2012",
   volume	 = "20",
   number	 = "3",
   pages	 = "723--726",
   month	 = "jul"
}