Published in Zoological Science, in 1989, in volume 6, pages 885-898

Created: 2012-09-19, modified: 2012-09-19

Published in Mammal Study, in 1996, in volume 21, pages 153-159

Created: 2014-09-25, modified: 2014-09-25

Published in Zoological Science, in 1989, in volume 6, pages 943-950

Created: 2012-09-19, modified: 2012-09-19

Published in Zoological Science, in 1991, in volume 8, pages 751-758

Created: 2012-09-19, modified: 2012-09-19

Published in Zoological Science, in 1988, in volume 5, pages 1059-1064

Created: 2012-09-19, modified: 2012-09-19