Update README.rst

Added reference

README.rst

@@ -190,7 +190,9 @@ When using the model, please cite and refer to the following papers describing t
 
 * Rigon, R., Bertoldi, G., Over, T.M., 2006. GEOtop: A Distributed Hydrological Model with Coupled Water and Energy Budgets.  J. Hydrometeorol. 7, 371–388. https://doi.org/10.1175/JHM497.1
 
-Here is the full list of peer-reviewed publications using the GEOtop model (updated April 2021):
+Here is the full list of peer-reviewed publications using the GEOtop model (updated Mai 2021):
+
+* Wani, J. M., Thayyen, R. J., Ojha, C. S. P., and Gruber, S.: The surface energy balance in a cold and arid permafrost environment, Ladakh,  Himalayas, India, 15, 2273--2293, https://doi.org/10.5194/tc-15-2273-2021, 2021.
 
 * Bright Ross, J.G., Peters, W., Ossi, F., Moorcroft, P.L.,  Cordano, E.,  Eccel, E.,  Bianchini, F.,  Ramanzin, M., and  Cagnacci, F. . Climate change and anthropogenic food manipulation interact in shifting the distribution of a large herbivore at its altitudinal range limit. Sci Rep 11, 7600 (2021). https://doi.org/10.1038/s41598-021-86720-2