@article{NUMA_1990__57_6-7_133462,
     author = {Tibor Fiala},
     title = {On the {Monotonity} of {Incomplete} {Factorization.}},
     journal = {Numerische Mathematik},
     pages = {473--480},
     publisher = {mathdoc},
     volume = {57},
     number = {6-7},
     year = {1990},
     zbl = {0682.65015},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1990__57_6-7_133462/}
}