Fidel , Pilar, and Amparo Cervera. “Effects of Knowledge Management As a Business Resource for Innovative Enterprises in the City of Valencia: The Role of Customer Collaboration”. Responsibility and Sustainability 2, no. 2 (August 1, 2014): 57–67. Accessed May 17, 2026. https://responsibility-sustainability.org/index.php/R-S/article/view/38.