@article{MZM_2014_95_2_a1,
     author = {M. A. Alekhina and A. V. Vasin},
     title = {On {Bases} with {Unreliability} {Coefficient~}$2$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {170--201},
     publisher = {mathdoc},
     volume = {95},
     number = {2},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2014_95_2_a1/}
}