diff --git a/Example-Presentations.md b/Example-Presentations.md
index 23c5643..bc19b18 100644
--- a/Example-Presentations.md
+++ b/Example-Presentations.md
@@ -86,4 +86,5 @@ Feel free to edit this page and add your own presentations below:
 * [Introduction to Big Data: Using Hadoop and MapReduce](http://rodxavier.github.io/acm-big-data/#/) by [Rod Xavier Bondoc](https://twitter.com/rodxavier14)
 * [Open source vs open data](http://jehb.github.io/presentations/todd2014/) by [@jehb](http://www.twitter.com/jehb)
 * [Instalación y arranque de la máquina virtual de Tegnix](http://www.ciges.net/revealjs_demo) by [@Ciges](http://www.ciges.net). In Spanish, first lesson of a course for a IT School and Consultancy called [Tegnix](http://www.tegnix.com/)
-* [OpenStreetMap for developers](http://cortesimone.github.io/slide-opengeodata-roma-2014/) by [Simone Cortesi](http://cortesi.com). In English, aimed at GIS professionals interested in the OSM world.
\ No newline at end of file
+* [OpenStreetMap for developers](http://cortesimone.github.io/slide-opengeodata-roma-2014/) by [Simone Cortesi](http://cortesi.com). In English, aimed at GIS professionals interested in the OSM world.
+* [Reduction of continuous SO(2) symmetry of spatially extended systems](http://www.cns.gatech.edu/~burak/talks/slice/) by [Nazmi Burak Budanur](http://www.cns.gatech.edu/~burak/). A scientific presentation with rotatable 3D figures generated using Pre3d.
\ No newline at end of file