diff --git a/ThesTeX/content/6-discussion.tex b/ThesTeX/content/6-discussion.tex
index c3b44ee..ce2db93 100644
--- a/ThesTeX/content/6-discussion.tex
+++ b/ThesTeX/content/6-discussion.tex
@@ -18,3 +18,5 @@ Considering the future, there are many analysis and rendering targets to come.
 As with any kind of software, sooner or later the point may be reached where the proposed architecture fails.
 Given the positive result of the integration evaluation, this sure seems pessimistic.
 The framework shows some self-debugging feature: Once a log parser is working, analyzers can help to find patterns of log messages to outline the logs structure.
+
+Especially the spatial generalizations presented in \cite{adrienko2011spatial} or the overestimating error accumulation effect of GPS described in \cite{Ranacher_2015} compared to simplified tracks (e.g. following the methodology of \cite{Chen2009TrajectorySM}) are analyses the author looks forward to give a try.
\ No newline at end of file
diff --git a/ThesTeX/content/literature.bib b/ThesTeX/content/literature.bib
index 0c38823..caeba80 100644
--- a/ThesTeX/content/literature.bib
+++ b/ThesTeX/content/literature.bib
@@ -573,3 +573,9 @@ isbn="978-3-642-23199-5"
   year={2013},
   organization={IEEE}
 }
+@inproceedings{Chen2009TrajectorySM,
+  title={Trajectory simplification method for location-based social networking services},
+  author={Yukun Chen and Kai Jiang and Yu Zheng and Chunping Li and Nenghai Yu},
+  booktitle={GIS-LBSN},
+  year={2009}
+}