@techreport{weko_216135_1,
   author	 = "Hiroshi,Eto and Takehiro,Ito and Eiji,Miyano and Akira,Suzuki and Yuma,Tamura",
   title	 = "Algorithms for Happy Set Problem on Interval Graphs and Permutation Graphs",
   year 	 = "2022",
   institution	 = "Graduate School of Information Sciences, Tohoku University, Graduate School of Information Sciences, Tohoku University, School of Computer Science and Systems Engineering, Kyushu Institute of Technology, Graduate School of Information Sciences, Tohoku University, Graduate School of Information Sciences, Tohoku University",
   number	 = "7",
   month	 = "jan"
}