@article{INTM_1985_23_a2,
     author = {Kh. D. Ikramov},
     title = {Sparse linear problems of the method of least squares},
     journal = {Itogi nauki i tehniki. Seri\^a, Matemati\v{c}eskij analiz},
     pages = {219--285},
     year = {1985},
     volume = {23},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTM_1985_23_a2/}
}