@article{MZM_1975_17_1_a16,
     author = {S. S. Marchenkov},
     title = {Elementary {Skolem} functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {133--141},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_17_1_a16/}
}