@article{ZNSL_2009_367_a3,
     author = {Kh. D. Ikramov},
     title = {Improved bounds for the recursion width in congruent type methods for solving systems of linear equations},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {33--44},
     year = {2009},
     volume = {367},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2009_367_a3/}
}