Carassus, Jean, Niclas Andersson, Artūras Kaklauskas, Jorge Lopes, André Manseau, Les Ruddock, and Gerard de Valence. 2010. “Moving from Production to Services: A Built Environment Cluster Framework”. International Journal of Strategic Property Management 10 (3):169-84. https://doi.org/10.3846/1648715X.2006.9637551.