Ministry of Education, Culture, Sports, Science and Technology [Japan] https://ror.org/048rj2z13
Joetsu University of Education [Japan] https://ror.org/02xjxgz53
Mitaka city [Japan]
Nihon University [Japan] https://ror.org/05jk51a88
University of Yamanashi [Japan] https://ror.org/059x21724
2010 Volume 1 Pages 18-39
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https://ror.org/048rj2z13 
