Positive theory of a free semigroup
Doklady Akademii Nauk, Tome 211 (1973) no. 4, pp. 772-774
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@article{DAN_1973_211_4_a3,
author = {V. G. Durnev},
title = {Positive theory of a free semigroup},
journal = {Doklady Akademii Nauk},
pages = {772--774},
publisher = {mathdoc},
volume = {211},
number = {4},
year = {1973},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1973_211_4_a3/}
}
V. G. Durnev. Positive theory of a free semigroup. Doklady Akademii Nauk, Tome 211 (1973) no. 4, pp. 772-774. http://geodesic.mathdoc.fr/item/DAN_1973_211_4_a3/