Note on double points of immersions.
The linking number of singular maps.
Cobordism of immersions and singular maps, loop spaces and multiple points
Multiple points of singular maps, Part II
Note on the mappings of complex projective spaces
On the torsion groups of the cobordism groups of immersions
The Lyusternik-Shnirel'man category, vector bundles, and immersions of manifolds.
Geometric proof of the easy part of the Hopf invariant one theorem
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