@article{NUMA_1980__36_132700,
     author = {E.A. Lipitakis and D.J. Evans},
     title = {The {Rate} of {Convergence} of an {Approximate} {Matrix} {Factorization} {Semi-Direct} {Method.}},
     journal = {Numerische Mathematik},
     pages = {237--252},
     publisher = {mathdoc},
     volume = {36},
     year = {1980},
     zbl = {0437.65027},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1980__36_132700/}
}