Martynov, L. M. Über erreichbare Klassen von Gruppen und Halbgruppen. (Russian) Zbl 0281.20054 Mat. Sb., N. Ser. 90(132), 235-245 (1973). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Review MSC: 20M10 General structure theory for semigroups 20E15 Chains and lattices of subgroups, subnormal subgroups PDF BibTeX XML Cite \textit{L. M. Martynov}, Mat. Sb., Nov. Ser. 90(132), 235--245 (1973; Zbl 0281.20054)