The Kevaire Invariant of Hypersurfaces in Complex Projective Spaces. Shigeyuki Morita (1975) Commentarii mathematici Helvetici
The Seiberg-Witten invariants of symplectic four-manifolds Dieter Kotschick (1995/1996) Séminaire Bourbaki
The Signature Defect and the Homotopy of BPL and PL/O David Frank (1973) Commentarii mathematici Helvetici