@article{ZNSL_1972_32_a14,
     author = {S. V. Pakhomov},
     title = {Some properties of graphs of functions in the {Grzegorczyk} hierarchy},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {105--107},
     publisher = {mathdoc},
     volume = {32},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1972_32_a14/}
}