Update README.md

Author: vlabatut

README.md

@@ -94,5 +94,5 @@ Here are the dependencies for Nerwip:
   * [LIBSVM](http://www.csie.ntu.edu.tw/~cjlin/libsvm/)
 
 ## References
-* **[AL'13]** Atdağ, S. & Labatut, V. A Comparison of Named Entity Recognition Tools Applied to Biographical Texts, 2nd International Conference on Systems and Computer Science, 2013, 228-233. 
-http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6632052&tag=1
+* **[L'13]** V. Labatut. *Improved Named Entity Recognition Through SVM-Based Combination*, Technical report, Galatasaray University, Computer Science Department, 16p, 2013. [⟨hal-01322867⟩](https://hal.archives-ouvertes.fr/hal-01322867)
+* **[AL'13]** S. Atdağ & V. Labatut. *A Comparison of Named Entity Recognition Tools Applied to Biographical Texts*, 2nd International Conference on Systems and Computer Science, 2013, 228-233. [doi: 10.1109/IcConSCS.2013.6632052](https://doi.org/10.1109/IcConSCS.2013.6632052) - [⟨hal-00849797⟩](https://hal.archives-ouvertes.fr/hal-00849797)