Sat, 09 Oct 1999 23:20:49 +0200 wenzelm more explanations;
Sat, 09 Oct 1999 23:20:02 +0200 wenzelm tuned presentation;
Sat, 09 Oct 1999 23:19:20 +0200 wenzelm added structured version of the proof;
Sat, 09 Oct 1999 23:18:01 +0200 wenzelm improved;
Sat, 09 Oct 1999 23:17:47 +0200 wenzelm bib;
Sat, 09 Oct 1999 23:16:59 +0200 wenzelm support bibtex;
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