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2. D. M. Arnold, B. O’Brien, and J. D. Reid, “Quasi-pure injective and projective torsion-free abelian groups of finite rank,” Proc. London Math. Soc. 38(3), 532–544 (1979).
3. Yu. B. Dobrusin, “Torsion free quasi-pure injective abelian groups,” in Abelian Groups and Modules (Tomsk. Gos. Univ., Tomsk, 1980), pp. 45–69 [in Russian].
4. P. A. Krylov, “Some examples of quasipure injective and transitive torsion-free abelian groups,” in Abelian Groups and Modules 7 (Tomsk. Gos. Univ., Tomsk, 1988), pp. 81–99 [in Russian].
5. P. A. Krylov, “A class of quasipure injective abelian groups,” Mat. Zametki 45(4), 53–58 (1989) [Math. Notes 45 (3–4), 301–304 (1989)].