Update index.md

Author: tknopp

docs/src/index.md

@@ -23,7 +23,7 @@ are invited to contribute own datasets.
 
 The source code of this project is licensed under the MIT license. All MPI data is licensed
 under the [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) license. This implies that
-you are free to use, share, and adapt the data. However, you must give appropriate credit by citing the project. In particular we ask you to cite the [MDF publication](http://arxiv.org/abs/1602.06072).
+you are free to use, share, and adapt the data. However, you must give appropriate credit by citing the project. In particular we ask you to cite [this publication](https://www.sciencedirect.com/science/article/pii/S2352340919313265).
 
 ## Contribution