@techreport{weko_186849_1,
   author	 = "Ching-Yuan,Yang and Brendan,Flanagan and Hiroaki,Ogata",
   title	 = "Version Control for The Continuity of Learning Footprints Across Versions within E-Book Reader",
   year 	 = "2018",
   institution	 = "Graduate School of Informatics, Kyoto University, Academic Center for Computing and Media Studies, Kyoto University, Academic Center for Computing and Media Studies, Kyoto University",
   number	 = "1",
   month	 = "mar"
}