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JOURNALS
// Doklady Akademii Nauk
// Archive
Dokl. Akad. Nauk SSSR,
1960
Volume 133,
Number 3,
Pages
537–539
(Mi dan28089)
MATHEMATICS
On subsemigroups of free semigroups
L. N. Shevrin
Ural State University, Sverdlovsk
Presented:
A. I. Mal'tsev
Received: 27.03.1960
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Steklov Math. Inst. of RAS
, 2026
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