@techreport{weko_210977_1,
   author	 = "Tesshu,Hanaka and Yasuaki,Kobayashi and Kazuhiro,Kurita and See,Woo Lee and Yota,Otachi",
   title	 = "On Tractable Problems of Diversity Optimization",
   year 	 = "2021",
   institution	 = "Nagoya University, Kyoto University, National Institute of Informatics, Kyoto University, Nagoya University",
   number	 = "1",
   month	 = "apr"
}