@article{DM_1991_3_1_a3, author = {S. B. Gashkov}, title = {Boolean functions that are difficult to realize and real numbers that are difficult to evaluate}, journal = {Diskretnaya Matematika}, pages = {48--60}, publisher = {mathdoc}, volume = {3}, number = {1}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DM_1991_3_1_a3/} }