Delens, Paul Métrique vectorielle et géométrie des sphères. (French) Zbl 0005.30904 J. Math. Pures Appl., IX. Sér. 11, 209-253 (1932). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Keywords:geometry PDFBibTeX XMLCite \textit{P. Delens}, J. Math. Pures Appl. (9) 11, 209--253 (1932; Zbl 0005.30904)