@ARTICLE{cgg2016,
author = {C. Carstensen and D. Gallistl and J. Gedicke},
title = {Justification of the saturation assumption},
year = {2016},
journal = {Numer. Math.},
doi = {10.1007/s00211-015-0769-7},
volume = {134},
number = {1},
pages = {1--25},
}