diff --git a/old_thesis/opamp_circuits_C_GARRETT/opamps.tex b/old_thesis/opamp_circuits_C_GARRETT/opamps.tex
index c48fa7a..b0998fd 100644
--- a/old_thesis/opamp_circuits_C_GARRETT/opamps.tex
+++ b/old_thesis/opamp_circuits_C_GARRETT/opamps.tex
@@ -1509,7 +1509,7 @@ $$ fm (PHS45) = \{ 90\_phaseshift, nosignal, 0\_phaseshift \} $$
 \subsection{Non Inverting Buffer: NIBUFF.}
 
 The non-inverting buffer functional group, is comprised of one component, an op-amp.
-We use the failure modes for an op-amp~\cite[mil1991}[p. to represent this group.
+We use the failure modes for an op-amp~\cite{fmd91}[p.3-116] to represent this group.
 % GARK
 $$ fm(NIBUFF) = fm(OPAMP) = \{L\_{up}, L\_{dn}, Noop, L\_slew \} $$