@article{TIMM_2013_19_2_a23,
     author = {L. D. Popov},
     title = {On the adaptation of the least squares method to improper problems of mathematical programming},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {247--255},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2013_19_2_a23/}
}