[patch fix] documentation

Notes_Upgrades/Communications/Euroscipy2019/2019_LM_Euroscipy.bib

@@ -0,0 +1,10 @@
+@article{didier2016,
+  title={Non-monotonic growth rates of sawtooth precursors evidenced with a new method on ASDEX Upgrade},
+  author={Vezinet, D and Igochine, V and Weiland, M and Yu, Q and Gude, A and Meshcheriakov, D and Sertoli, M and EUROfusion MST1 Team and others},
+  journal={Nuclear Fusion},
+  volume={56},
+  number={8},
+  pages={086001},
+  year={2016},
+  publisher={IOP Publishing}
+}