On December 18, Andrés Muñoz Villamizar made the public defense of his doctoral dissertation, entitled "model to integrate and improve productive and environmental efficiency in organizations", before the court chaired by Dr. Eduardo José Ayesa Iturrate , at classroom of Degrees of the Ibaeta building in San Sebastian.

After the defense of the thesis, all the members of the tribunal congratulated Andrés Muñoz Villamizar and his thesis directors, Dr. Javier Santos García and Dr. Paloma Grau Gumbau, for the research work carried out. This brings to 642 the number of theses defended at the Campus Tecnológico de la Universidad de Navarra.