http://www.saber.ula.ve/handle/123456789/4709 1987 Tue, 09 Jun 2026 10:58:10 GMT 2026-06-09T10:58:10Z http://www.saber.ula.ve/handle/123456789/22676 Unitary invariants of spectral measures-I. Panchapagesan T., Venkataramaiyer Tue, 06 Jun 2006 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22676 2006-06-06T09:00:00Z http://www.saber.ula.ve/handle/123456789/22675 Notas de Matemática Thu, 01 Jun 2006 09:00:00 GMT http://www.saber.ula.ve/handle/123456789/22675 2006-06-01T09:00:00Z