Monotonous stability for neutral fixed points. Bair, J.; Haesbroeck, G. — 1997 Bulletin of the Belgian Mathematical Society - Simon Stevin
The barrier cone of a convex set and the closure of the cover. Bair, J.; Dupin, J.C. — 1999 Journal of Convex Analysis
A propos d'un probleme de Klee sur la seperation de plusieurs ensembles. J. Bair — 1976 Mathematica Scandinavica