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-rw-r--r--doc/refman/RefMan-cic.tex2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/refman/RefMan-cic.tex b/doc/refman/RefMan-cic.tex
index c481b3adba..2c0f155388 100644
--- a/doc/refman/RefMan-cic.tex
+++ b/doc/refman/RefMan-cic.tex
@@ -44,7 +44,7 @@ function types over these data types.
{\Prop} and {\Set} themselves can be manipulated as ordinary
terms. Consequently they also have a type. Because assuming simply
-that {\Set} has type {\Set} leads to an inconsistent theory, the
+that {\Set} has type {\Set} leads to an inconsistent theory~\cite{Coq86}, the
language of {\CIC} has infinitely many sorts. There are, in addition
to {\Set} and {\Prop} a hierarchy of universes {\Type$(i)$} for any
integer $i$.