http://www.saber.ula.ve/handle/123456789/4642 1978 Wed, 27 May 2026 12:20:03 GMT 2026-05-27T12:20:03Z http://www.saber.ula.ve/handle/123456789/22542 On perfect images of ordinals. Markanda, Raj K.; Soundararajan, T.; Jakel, D. Fri, 31 Mar 2006 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22542 2006-03-31T09:00:00Z http://www.saber.ula.ve/handle/123456789/22541 Notas de Matemática Fri, 31 Mar 2006 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22541 2006-03-31T09:00:00Z