@article{MZM_2009_85_2_a1,
     author = {P. A. Borodin},
     title = {The {Linearity} {Coefficient} of the {Metric} {Projection} onto a {Chebyshev} {Subspace}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {180--188},
     publisher = {mathdoc},
     volume = {85},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2009_85_2_a1/}
}