Geodesic
Elementary Skolem functions
Matematičeskie zametki, Tome 17 (1975) no. 1, pp. 133-141 
S. S. Marchenkov. Elementary Skolem functions. Matematičeskie zametki, Tome 17 (1975) no. 1, pp. 133-141. http://geodesic.mathdoc.fr/item/MZM_1975_17_1_a16/
@article{MZM_1975_17_1_a16,
     author = {S. S. Marchenkov},
     title = {Elementary {Skolem} functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {133--141},
     year = {1975},
     volume = {17},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_17_1_a16/}
}
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JO  - Matematičeskie zametki
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IS  - 1
UR  - http://geodesic.mathdoc.fr/item/MZM_1975_17_1_a16/
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Voir la notice de l'article provenant de la source Math-Net.Ru

It is shown that any Skolem elementary relation belongs to the Grzegorczyk class $\mathscr E^0$.