https://www.cimat.mx/wp-content/uploads/2021/04/transparent.png00Arizmendi Echegaray Octaviohttps://www.cimat.mx/wp-content/uploads/2021/04/transparent.pngArizmendi Echegaray Octavio2021-03-23 20:28:312021-03-23 20:44:09On bounds for the energy of graphs and digraphs