Thomas, E. The index of a tangent 2-field. (English) Zbl 0153.53504 Comment. Math. Helv. 42, 86-110 (1967). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 17 Documents Keywords:topology PDFBibTeX XMLCite \textit{E. Thomas}, Comment. Math. Helv. 42, 86--110 (1967; Zbl 0153.53504) Full Text: DOI EuDML