@article{DM_2008_20_1_a9,
     author = {D. Yu. Cherukhin},
     title = {On complexity of linear operators on the class of circuits of depth~2},
     journal = {Diskretnaya Matematika},
     pages = {109--119},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2008_20_1_a9/}
}