Published in Zoological Science, in 1993, in volume 10, pages 257-265

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

Published in Zoological Science, in 1994, in volume 11, pages 33-38

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

Published in Biol Bull, in 1998, in volume 194, pages 253-259

Created: 2010-01-07, modified: 2011-06-21