@article{DA_2009_16_5_a7,
     author = {K. L. Rychkov},
     title = {On the complexity of generalized contact circuits},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {78--87},
     publisher = {mathdoc},
     volume = {16},
     number = {5},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2009_16_5_a7/}
}