Abian, Alexander; Brown, Arthur B. Fixed points and covering under continuous mappings of a spherical shell. (English) Zbl 0113.16802 Duke Math. J. 29, 653-655 (1962). PDF BibTeX XML Cite \textit{A. Abian} and \textit{A. B. Brown}, Duke Math. J. 29, 653--655 (1962; Zbl 0113.16802) Full Text: DOI
Abian, Alexander; Brown, Arthur B. Fixed points of continuous mappings into Euclidean \(n\)-space. (English) Zbl 0113.16801 Duke Math. J. 29, 647-651 (1962). PDF BibTeX XML Cite \textit{A. Abian} and \textit{A. B. Brown}, Duke Math. J. 29, 647--651 (1962; Zbl 0113.16801) Full Text: DOI