Here they came, although all happened long ago, in scg09 http://blip.tv/file/2666960 http://blip.tv/file/2666955 (very end of the talk with questions) Thanks to Ms Blackhold, who organized the talks, recorded and uploaded them. (the website about the talk: http://www.associacio-aoe.org/scg/09/?page_id=84 ) Regards, Lluís