Avellaneda-Rivera, L. M., Ángela González-Moreno, and F. J. Sáez-Martínez. “The Pursuit of External Knowledge in Eco-Innovation. Analysis of the Agri-Food Sector in Spain”. Journal of Business, Universidad Del Pacífico (Lima, Peru), Vol. 10, no. 1, May 2018, pp. 70-92, doi:https://doi.org/10.21678/jb.2018.878.