Erdös, Jenö Torsion-free factor groups of free abelian groups and a classification of torsion-free abelian groups. (English) Zbl 0078.01602 Publ. Math. Debr. 5, 172-184 (1957). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents Keywords:Group Theory PDFBibTeX XMLCite \textit{J. Erdös}, Publ. Math. Debr. 5, 172--184 (1957; Zbl 0078.01602)