http://www.itftennis.com/coaching/
http://www.itftennis.com/coaching/sportsscience/index.asp
http://www.tenniseurope.org/Development/Develop_Coaches-Education.aspx
http://www.tennisicoach.com/
http://www.rfet.es/maestria/001.php?j=1&id=10&subid=10&offset=800
http://www.itftennis.com/coaching/publications/powerpoints/spanish/
http://www.tennisplayandstay.com/
http://www.uspta.com/index.cfm
http://www.usta.com/coaches/default.sps
http://coachesinfo.com/category/tennis/
http://www.tenisconciencia.com.ar/es/medicina_deportiva.php
http://eltenistendero.blogspot.com/2008_01_01_archive.html

WTA http://www.sonyericssonwtatour.com/media/notesandnetcords/

ITF http://www.itftennis.com/technical/ | http://www.itftennis.com/abouttheitf/publications/index.asp

TE http://www.tenniseurope.org/MediaInfocentre/Med_Info_Tennis-Europe-News_Archive.aspx

RFET http://www.rfet.es/tenisinfo/index.php