Notas de Matemática - Nº 272 http://www.saber.ula.ve/handle/123456789/30656 2009 Tue, 09 Jun 2026 10:49:32 GMT 2026-06-09T10:49:32Z A lower bound for the spectral radius of a digraph http://www.saber.ula.ve/handle/123456789/30657 A lower bound for the spectral radius of a digraph Gudiño, E.; Rada, Juan Thu, 18 Mar 2010 18:46:18 GMT http://www.saber.ula.ve/handle/123456789/30657 2010-03-18T18:46:18Z