@article{ZVMMF_2009_49_3_a2,
     author = {E. A. Nikolaevskaya and A. N. Khimich},
     title = {Error estimation for a~weighted minimum-norm least squares solution with positive definite weights},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {422--430},
     publisher = {mathdoc},
     volume = {49},
     number = {3},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2009_49_3_a2/}
}