The Smale invariant of a knot.
Hughes, John F. ; Melvin, Paul M.
Commentarii mathematici Helvetici, Tome 60 (1985), p. 615-627 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1985-01-01
EUDML-ID : urn:eudml:doc:140034 
@article{GDZPPN002065975,
     title = {The Smale invariant of a knot.},
     journal = {Commentarii mathematici Helvetici},
     volume = {60},
     year = {1985},
     pages = {615-627},
     zbl = {0586.57017},
     url = {http://dml.mathdoc.fr/item/GDZPPN002065975}
}

Hughes, John F.; Melvin, Paul M. The Smale invariant of a knot.. Commentarii mathematici Helvetici, Tome 60 (1985) pp. 615-627. http://gdmltest.u-ga.fr/item/GDZPPN002065975/