--- a/doc-src/manual.bib Tue Feb 19 23:49:26 2002 +0100
+++ b/doc-src/manual.bib Tue Feb 19 23:49:49 2002 +0100
@@ -1169,7 +1169,8 @@
@phdthesis{Wenzel-PhD,author={Markus Wenzel},title={Isabelle/Isar ---
a versatile environment for human-readable formal proof documents},
-school={Institut f{\"u}r Informatik, Technische Universit{\"a}t M{\"u}nchen},year=2002}
+school={Institut f{\"u}r Informatik, Technische Universit{\"a}t M{\"u}nchen},year=2002,
+ note = {\url{http://tumb1.biblio.tu-muenchen.de/publ/diss/in/2002/wenzel.html}}}
@book{principia,