Notas de Matemática - N° 202 http://www.saber.ula.ve/handle/123456789/4714 2000 2026-04-21T16:20:08Z Ordering explanations and the structural rules for abduction. http://www.saber.ula.ve/handle/123456789/22685 Ordering explanations and the structural rules for abduction. Pino P., Ramón A.; Uzcátegui Aylwin, Carlos Enrique 2006-06-07T09:00:00Z Notas de Matemática http://www.saber.ula.ve/handle/123456789/22686 Notas de Matemática 2006-06-07T09:00:00Z