i got a few comments on this one. I thought it was well known to this forum, that some people could give some prctical advice on Harps , based on conclusions, drawn from J.'s theoretical results ... but it seems lot of people are not aware to the article.
Someone suggested to post the article, which is infact a problem to the graphics which are presented, but it is the best way collect all question via FAQ and give them to J. instead of every Harpplayer asks him and on the other hand, there must be a few people who are concerned to physics and can help
over europe you can find the article in
http://www.cs.tu-berlin.de/bibliotheken/tibquick.html but i don't have access there and it seems it can not be sent via email