doc(readme): adding paper references

Adding a list of publications that are related to the PowerAPI project.

README.md

@@ -15,6 +15,18 @@ If you would like to contribute code you can do so through GitHub by forking the
 
 When submitting code, please make every effort to follow existing conventions and style in order to keep the code as readable as possible.
 
+## Publications
+* **Process-level Power Estimation in VM-based Systems**: M. Colmant, M. Kurpicz, L. Huertas, R. Rouvoy, P. Felber. *European Conference on Computer Systems* (EuroSys). 2015, pp.1-12. To appear.
+* **[Monitoring Energy Hotspots in Software](https://hal.inria.fr/hal-01069142)**: A. Noureddine, R. Rouvoy, L. Seinturier. *Journal of Automated Software Engineering*, Springer, 2015, pp.1-42.
+* **[Unit Testing of Energy Consumption of Software Libraries](https://hal.inria.fr/hal-00912613)**: A. Noureddine, R. Rouvoy, L. Seinturier. *International Symposium On Applied Computing* (SAC), Mar 2014, Gyeongju, South Korea. pp.1200-1205.
+* **[Informatique : Des logiciels mis au vert](http://www.jinnove.com/Actualites/Informatique-des-logiciels-mis-au-vert)**: L. Seinturier, R. Rouvoy. *J'innove en Nord Pas de Calais*, [NFID](http://www.jinnove.com), 2013.
+* **[PowerAPI: A Software Library to Monitor the Energy Consumed at the Process-Level](http://ercim-news.ercim.eu/en92/special/powerapi-a-software-library-to-monitor-the-energy-consumed-at-the-process-level)**: A. Bourdon, A. Noureddine, R. Rouvoy, L. Seinturier. *ERCIM News, Special Theme: Smart Energy Systems*, 92,  pp.43-44. [ERCIM](http://www.ercim.eu), 2013.
+* **[Mesurer la consommation en énergie des logiciels avec précision](http://www.lifl.fr/digitalAssets/0/807_01info_130110_16_39.pdf)**: A. Bourdon, R. Rouvoy, L. Seinturier. *01 Business & Technologies*, 2013.
+* **[A review of energy measurement approaches](https://hal.inria.fr/hal-00912996v2)**: A. Noureddine, R. Rouvoy, L. Seinturier. *ACM SIGOPS Operating Systems Review*, ACM, 2013, 47 (3), pp.42-49.
+* **[Runtime Monitoring of Software Energy Hotspots](https://hal.inria.fr/hal-00715331)**: A. Noureddine, A. Bourdon, R. Rouvoy, L. Seinturier. *International Conference on Automated Software Engineering* (ASE), Sep 2012, Essen, Germany. pp.160-169.
+* **[A Preliminary Study of the Impact of Software Engineering on GreenIT]()**: A. Noureddine, A. Bourdon, R. Rouvoy, L. Seinturier. *International Workshop on Green and Sustainable Software* (GREENS), Jun 2012, Zurich, Switzerland. pp.21-27. 
+
+
 ## Acknowledgments
 We all stand on the shoulders of giants and get by with a little help from our friends. PowerAPI is written in [Scala](http://www.scala-lang.org) (version 2.11.4 under [3-clause BSD license](http://www.scala-lang.org/license.html)) and built on top of:
 * [Akka](http://akka.io) (version 2.3.6 under [Apache 2 license](http://www.apache.org/licenses/LICENSE-2.0)), for asynchronous processing