A few helpful links
From:
Torsten
Message:
67655
Date:
2011-05-30
http://cejsh.icm.edu.pl/cejsh/cgi-bin/getdoc.cgi?09PLAAAA061310
http://cejsh.icm.edu.pl/cejsh/cgi-bin/getdoc.cgi?06PLAAAA01082468
Torsten