Lenhari, Luciana Cristina, and Ruy de Quadros Carvalho. “Service Innovation and Its Management: A Summary of the Contemporary International Theories”. Management and Connections Journal, vol. 2, no. 2, Nov. 2013, pp. 75-101, doi:10.13071/regec.2317-5087.2013.2.2.4646.75-101.