CHOJUN MIYAGUI.
es.wikipedia.org/wiki/Ch%C5%8Djun_Miyagi
GOGEN YAMAGUCHI:karateloarce.blogspot.com/2011_02_01_archive.html
GOSHI YAMAGUCHI:www.karatewa.com/index.php
YOSUKE YAMASHITA.https://sites.google.com/site/gojuryukaratedoyamashita/
sites.google.com/site/gojuryukaratedoyamashita/