Moreira, Jacinta, Maria Silva, Jorge Simoes, and Gastao Sousa. “Marketing Innovation: Study of Determinants of Innovation in the Design and Packaging of Goods and Services—Application to Portuguese Firms”. Contemporary Management Research 8, no. 2 (September 25, 2012). Accessed December 6, 2019. https://www.cmr-journal.org/article/view/11047.