Mayer, W.; Campbell, A. D. Generalized homology groups. (English) Zbl 0063.09032 Rev., Ser. A, Univ. Nac. Tucuman 3, 155-194 (1942). PDFBibTeX XMLCite \textit{W. Mayer} and \textit{A. D. Campbell}, Rev., Ser. A, Univ. Nac. Tucumán 3, 155--194 (1942; Zbl 0063.09032)
Mayer, W.; Campbell, A. D. Generalized homology groups. (English) Zbl 0063.09031 Proc. Natl. Acad. Sci. USA 26, 655-656 (1940). PDFBibTeX XMLCite \textit{W. Mayer} and \textit{A. D. Campbell}, Proc. Natl. Acad. Sci. USA 26, 655--656 (1940; Zbl 0063.09031) Full Text: DOI
Mayer, W.; Campbell, A. D. Generalized homology groups. (English) JFM 66.0951.01 Proc. nat. Acad. Sci. USA 26, 655-656 (1940). PDFBibTeX XMLCite \textit{W. Mayer} and \textit{A. D. Campbell}, Proc. Natl. Acad. Sci. USA 26, 655--656 (1940; JFM 66.0951.01) Full Text: DOI