Whitehead, J. H. C. On operators in relative homotopy groups. (English) Zbl 0041.10102 Ann. Math. (2) 49, 610-640 (1948). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 19 Documents Keywords:Topology PDFBibTeX XMLCite \textit{J. H. C. Whitehead}, Ann. Math. (2) 49, 610--640 (1948; Zbl 0041.10102) Full Text: DOI