@article{MZM_1976_20_4_a1,
     author = {S. S. Marchenkov},
     title = {One class of partial sets},
     journal = {Matemati\v{c}eskie zametki},
     pages = {473--478},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1976_20_4_a1/}
}