@article{DAN_1961_139_4_a3,
     author = {A. A. Zykov},
     title = {Edge vertex functions and the distributive properties of graphs},
     journal = {Doklady Akademii Nauk},
     pages = {787--790},
     publisher = {mathdoc},
     volume = {139},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_4_a3/}
}