@article{NUMA_1991__59_8_133559,
     author = {R.D. Lazarov and R.E. Ewing and ...},
     title = {Local refinement techniques for elliptic problems on cell-centered grids. {III.} {Algebraic} multilevel {BEPS} preconditioners.},
     journal = {Numerische Mathematik},
     pages = {431--452},
     publisher = {mathdoc},
     volume = {59},
     number = {8},
     year = {1991},
     zbl = {0726.65137},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1991__59_8_133559/}
}