@article{ETNA_2003__15__a7, author = {Martikainen, Janne and Rossi, Tuomo and Toivanen, Jari}, title = {Multilevel preconditioners for {Lagrange} multipliers in domain imbedding}, journal = {Electronic transactions on numerical analysis}, pages = {94--105}, publisher = {mathdoc}, volume = {15}, year = {2003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ETNA_2003__15__a7/} }