http://www.saber.ula.ve/handle/123456789/4655 1983 Tue, 09 Jun 2026 11:59:39 GMT 2026-06-09T11:59:39Z http://www.saber.ula.ve/handle/123456789/22568 Invertibilidad. Quijada S., Oscar A. Mon, 03 Apr 2006 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22568 2006-04-03T09:00:00Z http://www.saber.ula.ve/handle/123456789/22567 Notas de Matemática Mon, 03 Apr 2006 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22567 2006-04-03T09:00:00Z