http://www.saber.ula.ve/handle/123456789/4576 1987 Sun, 31 May 2026 08:35:21 GMT 2026-05-31T08:35:21Z http://www.saber.ula.ve/handle/123456789/22398 Notas de Matemática Tue, 07 Mar 2006 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22398 2006-03-07T09:00:00Z http://www.saber.ula.ve/handle/123456789/22397 Periodic sliding motions 1. Sira Ramírez, Hebertt José Wed, 10 Aug 2005 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22397 2005-08-10T09:00:00Z