diff -r a8a21d7a83a1 -r 4412debd3004 etc/settings
--- a/etc/settings	Sat Oct 09 16:18:16 1999 +0200
+++ b/etc/settings	Sat Oct 09 23:15:40 1999 +0200
@@ -58,6 +58,7 @@
 TEXINPUTS="$ISABELLE_HOME/lib/texinputs:$TEXINPUTS"
 ISABELLE_LATEX="latex"
 ISABELLE_PDFLATEX="pdflatex"
+ISABELLE_BIBTEX="bibtex"
 ISABELLE_DVIPS="dvips -D 600"