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Research partially supported by NSF Grant no. DMS 8701074, and Baylor University's Summer Sabbatical Program.
This word was done during the second author's visit to Baylor University in Summer 1988. The hospitality and support of Baylor is gratefully acknowledged.
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Dugas, M., Göbel, R. Torsion-free nilpotent groups andE-modules. Arch. Math 54, 340–351 (1990). https://doi.org/10.1007/BF01189580
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DOI: https://doi.org/10.1007/BF01189580