@article{GDZPPN001186264, title = {Multilevel preconditioning.}, journal = {Numerische Mathematik}, volume = {63}, year = {1992}, pages = {315-344}, zbl = {0757.65031}, url = {http://dml.mathdoc.fr/item/GDZPPN001186264} }
Dahmen, Wolfgang; Kunoth, Angela. Multilevel preconditioning.. Numerische Mathematik, Tome 63 (1992) pp. 315-344. http://gdmltest.u-ga.fr/item/GDZPPN001186264/