Boothby, William M. The topology of regular curve families with multiple saddle points. (English) Zbl 0042.17603 Am. J. Math. 73, 405-438 (1951). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 4 Documents Keywords:topology PDFBibTeX XMLCite \textit{W. M. Boothby}, Am. J. Math. 73, 405--438 (1951; Zbl 0042.17603) Full Text: DOI