Gnecchi, Flavio, and Paolo Ricotti. “Brand Portfolio Reengineering. The Gruppo Coin Case”. Symphonya. Emerging Issues in Management, no. 1 (June 1, 2001): 35–50. Accessed June 29, 2022. https://symphonya.unicusano.it/article/view/2001.1.05gnecchi.ricotti.