@article{MZM_1967_2_1_a2,
     author = {\'E. I. Nechiporuk},
     title = {Correcting closures in contact circuits},
     journal = {Matemati\v{c}eskie zametki},
     pages = {15--24},
     year = {1967},
     volume = {2},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1967_2_1_a2/}
}