@Article{gmd-9-3803-2016,
AUTHOR = {Bercea, G.-T. and McRae, A. T. T. and Ham, D. A. and Mitchell, L. and Rathgeber, F. and Nardi, L. and Luporini, F. and Kelly, P. H. J.},
TITLE = {A structure-exploiting numbering algorithm for finite elements on
  extruded meshes, and its performance evaluation in Firedrake},
JOURNAL = {Geoscientific Model Development},
VOLUME = {9},
YEAR = {2016},
NUMBER = {10},
PAGES = {3803--3815},
URL = {https://gmd.copernicus.org/articles/9/3803/2016/},
DOI = {10.5194/gmd-9-3803-2016}
}