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// Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika
// Archive
Izv. Vyssh. Uchebn. Zaved. Mat.,
1981
Number 3,
Pages
80–81
(Mi ivm4705)
Brief communications
The groupoid of prevarieties of semigroups with a zero
L. M. Martynov
Omsk
UDC:
512.53
Received:
15.09.1980
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Steklov Math. Inst. of RAS
, 2024