@article{weko_147622_1,
   author	 = "Keisuke,Otaki and Akihiro,Yamamoto",
   title	 = "Periodic Pattern Mining with Periodical Co-occurrences of Symbols",
   journal	 = "情報処理学会論文誌数理モデル化と応用（TOM）",
   year 	 = "2016",
   volume	 = "9",
   number	 = "1",
   pages	 = "33--42",
   month	 = "feb"
}