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Publication:3963068
zbMath0498.08002MaRDI QIDQ3963068
G. Čupona, Gradimir Vojvodić, Siniša Crvenković
Publication date: 1980
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Varieties and pseudovarieties of semigroups (20M07) Free semigroups, generators and relations, word problems (20M05) Subalgebras, congruence relations (08A30)
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