@article{UZKU_2009_151_2_a20,
     author = {A. E. Shiganov},
     title = {On {Complexity} of {Oriented} {Contact} {Circuits} with {Limited} {Out-degree}},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {164--172},
     publisher = {mathdoc},
     volume = {151},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2009_151_2_a20/}
}