@article{DA_2012_19_3_a0,
     author = {S. V. Avgustinovich and Yu. L. Vasil'ev and K. L. Rychkov},
     title = {The computation complexity in the class of formulas},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {3--12},
     publisher = {mathdoc},
     volume = {19},
     number = {3},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2012_19_3_a0/}
}