Aikido Journal: www.aikidojournal.com/new/ Aikikai Foundation - Hombu Dojo Tokyo: www.aikikai.or.jp/Eng/index.htm International Aikido Federation: www.aikido-international.org/ C.A.A. : www.ai-ki-do.org/ Yamaguchi Sensei: www.yamaguchi-aikido.com/ Morihiko Murashige: www.aikidoonline.com/Columns/clmn_0903_murashige.html
