@article{MZM_2020_107_4_a8,
     author = {K. A. Popkov},
     title = {Short {Tests} of {Closures} for {Contact} {Circuits}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {591--603},
     publisher = {mathdoc},
     volume = {107},
     number = {4},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2020_107_4_a8/}
}