@article{ZNSL_1987_159_a0,
     author = {A. Yu. Yeremin},
     title = {On incomplete block factorization methods for matrices  with complicated structure},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {5--22},
     publisher = {mathdoc},
     volume = {159},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1987_159_a0/}
}