Journal of Pure and Applied Algebra · 1982 · 10 citations · 19 references
Natural SciencesCrop SciencesGroup WorkAbstract AlgebraArithmetic GeometryCohomology TheoryFundamental GroupGroup TheoryFinite Abelian GroupsPicard Groups
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John R. Hedstrom, Evan Houston · Pacific Journal of Mathematics · 1978 · 328 citations · Full text
Richard G. Swan · Journal of Algebra · 1980 · 190 citations
Silvio Greco, Carlo Enrico Traverso · French digital mathematics library (Numdam) · 1980 · 93 citations