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@@ -15,6 +15,9 @@ The macro-economic core of REMIND is a Ramsey-type optimal growth model
 in which intertemporal global welfare is optimized subject to equilibrium constraints.
 
 ## DOCUMENTATION
+
+A model description paper on REMIND 2.1 has been published in Geoscientific Model Development (GMD): https://doi.org/10.5194/gmd-14-6571-2021 .
+
 The model documentation for version 3.2.0 can be found at https://rse.pik-potsdam.de/doc/remind/3.2.0 .
 
 The most recent version of the documentation can also be extracted from the