After this paper was put up on the net, I've had quite a few emails about them. Some of them has pointed out bugs etc.

Among the ones I want to say thanks to for making improving suggestions and pointing out bugs are
Jens Larsson <>
Michael L Locher
Lars Gregori
Steve Bellantoni <>
Steven Leadbeater <>
Ariel Almedal
Lotti Luca, Milano, Italy