Merge branch 'update-readme' into 'master'

Improve formatting of citations

See merge request amdis/amdis!206

README.md

@@ -73,7 +73,18 @@ How to Cite AMDiS
 If you are using AMDiS as part of your research and in publication, we kindly ask you to cite AMDiS.
 As it is a Dune module, your are asked to cite a corresponding Dune paper, see [dune-project.org/about/publications/](https://dune-project.org/about/publications/), e.g.,
 ```
-P. Bastian, M. Blatt, A. Dedner, N.-A. Dreier, C. Engwer, R. Fritze, C. Gräser, C. Grüninger, D. Kempf, R. Klöfkorn, M. Ohlberger, O. Sander. The DUNE framework: Basic concepts and recent developments. Computers & Mathematics with Applications 81, 2021, pp. 75-112
+@article{Dune:2021,
+  title   = {The \textsc{Dune} framework: Basic concepts and recent developments},
+  author  = {Peter Bastian and Markus Blatt and Andreas Dedner and Nils-Arne Dreier
+             and Christian Engwer and Ren{\'e} Fritze and Carsten Gr{\"a}ser
+             and Christoph Gr{\"u}ninger and Dominic Kempf and Robert Kl{\"o}fkorn
+             and Mario Ohlberger and Oliver Sander},
+  volume  = {81},
+  journal = {Computers and Mathematics with Applications},
+  year    = {2021},
+  pages   = {75--112},
+  doi     = {10.1016/j.camwa.2020.06.007}
+}
 ```
 
 In addition, cite the source repository, including the release version of the library that you are using, e.g.