@article{ETNA_2003__15__a11,
     author = {Knyazev,  Andrew V. and Neymeyr,  Klaus},
     title = {Efficient solution of symmetric eigenvalue problems using multigrid preconditioners in the locally optimal block conjugate gradient method},
     journal = {Electronic transactions on numerical analysis},
     pages = {38--55},
     year = {2003},
     volume = {15},
     zbl = {1031.65126},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2003__15__a11/}
}