@article{TRSPY_2007_259_a15,
     author = {V. M. Zakalyukin},
     title = {Quasi-projections},
     journal = {Informatics and Automation},
     pages = {282--290},
     publisher = {mathdoc},
     volume = {259},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2007_259_a15/}
}