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Translated from Algebra i Logika, Vol. 14, No. 4, pp. 456–484, July–August, 1975.
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Yakovlev, B.V. An example of solvable torsion-free groups which are lattice isomorphic but not isomorphic. Algebra and Logic 14, 282–301 (1975). https://doi.org/10.1007/BF01669006
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DOI: https://doi.org/10.1007/BF01669006