J. Simões et al.,  "The role of collaborative networks in product-service system business models for an advanced manufacturing technology SME", in 22nd Cambridge Int. Manufacturing Symp.: Supply chain transformation enabled by advanced technologies, Jagjit Singh Srai,  Paul Christodoulou, Don Fleet, Eric Harris, Patrick Hennelly, Nick Sherwen,  Yongjiang Shi , Ed., Cambridge, University of Cambridge, 2018