MathSciNet bibliographic data MR2529872 20K20 (20K30) Strüngmann, Lutz On endomorphism rings of \$B\sb 1\$$B\sb 1$-groups that are not \$B\sb 2\$$B\sb 2$-groups. Proc. Amer. Math. Soc. 137 (2009), no. 11, 3657–3668. Article

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