#ref(): File not found: "IFS2013_Sangaku_poster.pdf" at page "IFS2013"
#ref(): File not found: "IFS2013_Kujyu_poster.pdf" at page "IFS2013"
#ref(): File not found: "IFS2013_Aqua_poster.pdf" at page "IFS2013"
#ref(): File not found: "IFS2013_Yakushima_poster.pdf" at page "IFS2013"
#ref(): File not found: "IFS2013_HokkaidoSummer_poster.pdf" at page "IFS2013"
#ref(): File not found: "IFS2013_HokkaidoWinter_poster.pdf" at page "IFS2013"