@article{GDZPPN001183303,
title = {Algebraic Multi Level Preconditioning Methods. I.},
journal = {Numerische Mathematik},
volume = {56},
year = {1989},
pages = {157-178},
zbl = {0661.65110},
url = {http://dml.mathdoc.fr/item/GDZPPN001183303}
}
Axelsson, O.; Vassilevski, P.S. Algebraic Multi Level Preconditioning Methods. I.. Numerische Mathematik, Tome 56 (1989) pp. 157-178. http://gdmltest.u-ga.fr/item/GDZPPN001183303/