# HG changeset patch
# User Scott Morrison <scott@tqft.net>
# Date 1290533321 28800
# Node ID ee1c43e7785b7b0153318b1ea9f168d181a69301
# Parent  28592849a474c34dbf76835a5e96e0621bbe8b69
adding cite to tillmann

diff -r 28592849a474 -r ee1c43e7785b pnas/pnas.tex
--- a/pnas/pnas.tex	Sun Nov 21 15:24:53 2010 -0800
+++ b/pnas/pnas.tex	Tue Nov 23 09:28:41 2010 -0800
@@ -297,7 +297,7 @@
 Thus we can have the simplicity of strict associativity in exchange for more morphisms.
 We wish to imitate this strategy in higher categories.
 Because we are mainly interested in the case of strong duality, we replace the intervals $[0,r]$ not with
-a product of $k$ intervals (c.f. \cite{0909.2212}) but rather with any $k$-ball, that is, 
+a product of $k$ intervals (c.f. \cite{ulrike-tillmann-2008,0909.2212}) but rather with any $k$-ball, that is, 
 any $k$-manifold which is homeomorphic
 to the standard $k$-ball $B^k$.