@article{ETNA_2008__30__a5,
     author = {Mense,  Christian and Nabben,  Reinhard},
     title = {On algebraic multilevel methods for non-symmetric systems - convergence results},
     journal = {Electronic transactions on numerical analysis},
     pages = {323--345},
     year = {2008},
     volume = {30},
     zbl = {1171.65022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2008__30__a5/}
}