T. Leibner, R. Milk, and F. Schindler, “Extending DUNE: The dune-xt modules”, in Proceedings of the 3rd Dune User Meeting (2015): Archive of Numerical Software - Special Issue 2017, M. Blatt, B. Flemisch, and O. Sander, Eds. Heidelberg: heiBOOKS, 2017, pp. 193–216. doi: 10.11588/heibooks.280.c3286.