Semigroups of transformations of rank not exceeding two
Doklady Akademii Nauk, Tome 161 (1965) no. 5, pp. 1019-1022
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@article{DAN_1965_161_5_a5,
author = {B. V. Popov},
title = {Semigroups of transformations of rank not exceeding two},
journal = {Doklady Akademii Nauk},
pages = {1019--1022},
year = {1965},
volume = {161},
number = {5},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1965_161_5_a5/}
}
B. V. Popov. Semigroups of transformations of rank not exceeding two. Doklady Akademii Nauk, Tome 161 (1965) no. 5, pp. 1019-1022. http://geodesic.mathdoc.fr/item/DAN_1965_161_5_a5/