1. The fundamental equations of a submersion;O’Neill;Mich. Math. J.,1966
2. Pseudo-Riemannian almost product manifolds and submersions;Gray;J. Math. Mech.,1967
3. Stability and isolation phenomena for Yang-Mills fields;Bourguignon;Commun. Math. Phys.,1981
4. Bourguignon, J.P., and Lawson, H.B. Special Issue. A Mathematician’s Visit to Kaluza-Klein Theory, 1989.
5. Kaluza-Klein theory with scalar fields and generalized Hopf manifolds;Ianus;Class. Quantum Gravity,1987