References
A. Haefliger:Knotted (4k−1) spheres in 6k-space. Ann. of Math.75, 452–466 (1962).
A. Haefliger:Differentiable links. Topology1, 241–244 (1962).
P. J. Hilton:On the homotopy groups of the union of spheres. J. London Math. Soc.30, 154–171 (1955).
M. A. Kervaire:An interpretation of G. Whitehead’ s generalization of H. Hopf’ s invariant. Ann. of math.62, 345–365 (1959).
L. Pontrjagin:Smooth manifolds and their applications in homotoyp theory. Trudy Mat. Inst. im. Steklov 45 (1955) and AMS Translations, Series 2,11, 1–114.
R. Thom:Quelques propriétés globales des variétés différentiables. Comment. Math. Helv.28, 17–86 (1954).
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Haefliger, A., Steer, B. Symmetry of linking coefficients. Commentarii Mathematici Helvetici 39, 259–270 (1964). https://doi.org/10.1007/BF02566953
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DOI: https://doi.org/10.1007/BF02566953