http://www.saber.ula.ve/handle/123456789/4532 1978 Fri, 15 May 2026 15:22:59 GMT 2026-05-15T15:22:59Z http://www.saber.ula.ve/handle/123456789/22309 Notas de Matemática Tue, 07 Mar 2006 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22309 2006-03-07T09:00:00Z http://www.saber.ula.ve/handle/123456789/22310 Regular general contact manifolds. Saenz, Jorge Mon, 08 Aug 2005 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22310 2005-08-08T09:00:00Z