some more intro lines + new refs
authorhackbard <hackbard@sage.physik.uni-augsburg.de>
Fri, 16 Oct 2009 17:25:27 +0000 (19:25 +0200)
committerhackbard <hackbard@sage.physik.uni-augsburg.de>
Fri, 16 Oct 2009 17:25:27 +0000 (19:25 +0200)

No differences found