Birkhoff, Garrett Sur les espaces discrets. (French) Zbl 0012.22702 C. R. Acad. Sci., Paris 201, 19-20 (1935). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document Keywords:Topology PDFBibTeX XMLCite \textit{G. Birkhoff}, C. R. Acad. Sci., Paris 201, 19--20 (1935; Zbl 0012.22702)