@article{INTM_1982_20_a3,
     author = {Kh. D. Ikramov},
     title = {Sparse matrices},
     journal = {Itogi nauki i tehniki. Seri\^a, Matemati\v{c}eskij analiz},
     pages = {179--260},
     publisher = {mathdoc},
     volume = {20},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTM_1982_20_a3/}
}