From 406b8c23194e370b87972694fdfcd9be230551c2 Mon Sep 17 00:00:00 2001
From: "hannes.kuchelmeister" <hannes.kuchelmeister@cas.de>
Date: Mon, 10 Feb 2020 12:28:03 +0100
Subject: [PATCH] add citation

---
 25_Outline/outline.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/25_Outline/outline.tex b/25_Outline/outline.tex
index ef34c60..d58ddbf 100644
--- a/25_Outline/outline.tex
+++ b/25_Outline/outline.tex
@@ -101,7 +101,7 @@ Commonly for content-based recommenders categories based on content are created
 \FloatBarrier
 
 \section{Problem}
-A group of people with different personal preferences wants to buy products with high variability. Making decisions in the group comes with problems as communicating preferences is complicated.
+A group of people with different personal preferences wants to buy products with high variability. Making decisions in the group comes with problems as communicating preferences is complicated. Group dynamics and biases can lead to suboptimal decisions \cite{kerrBiasJudgmentComparing1996}. 
 
 Examples of that are:
 \begin{itemize}