@techreport{weko_204147_1,
   author	 = "Hiroki,Usuba and Shota,Yamanaka and Homei,Miyashita",
   title	 = "Filling Linear Grids in Presence or Absence of Displayed Grids",
   year 	 = "2020",
   institution	 = "Meiji University, Yahoo Japan Corporation, Meiji University",
   number	 = "31",
   month	 = "mar"
}