@article{ETNA_2000__10__a6, author = {Brandt, Achi}, title = {General highly accurate algebraic coarsening}, journal = {Electronic transactions on numerical analysis}, pages = {1--20}, year = {2000}, volume = {10}, zbl = {0951.65096}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ETNA_2000__10__a6/} }