two links from wich I think they both fit in de AND philosophy:http://www.huertecilla.net/Eng%20Frameset%20Welkom.htm
The website is from Peter Bosman, a dutchman who lives in Andalusie (Spain). I went there this year and learned a lot. He knows very very much, also about history from horese riding, sience etc etc. all really based on grounded research he did. What I especially liked is that he really give practical information, an good basis to work on your own way yourself. So not really a method with technicall "buttons" but more like a way of working, living, seeing.
The different with AND is that he not really courages the own initiative of the horse but still has horses with lots to 'say' and really no robots at all. And he works a lot with positive reinforcement en no pressure at all.
Rhe other one is "Terra Natura" school for essential horse communication from Pieter Baalbergenhttp://www.terranatura.nl
It's a pity the website is only in dutch. I fallowed one of the clinics and they teached a lot about horse behavior and about how you can be a good and respectfull leader. A leader like the caring leaders in the herd so they onderline what a big difference that is comparing to be "the dominant boss". terra Natura is really a lifestyle, and less focussed on training methods...