1. Abele, A., McCrae, J.P., Jentzsch, A. and Cyganiak, R. (2017), “The linking open data cloud diagram”, available at: http://lod-cloud.net/ (accessed February 28, 2018).
2. Value creation on open government data,2016
3. Ballatore, A., Wilson, D.C. and Bertolotto, M. (2013), “A survey of volunteered open geo-knowledge bases in the semantic web”, in Pasi, G., Bordogna, G. and Jain, L.C. (Eds), Quality Issues in the Management of Web Information, Vol. 50, Springer, Berlin and Heidelberg, pp. 93-120.
4. Berners-Lee, T. (2006), “Linked data – design issues”, available at: www.w3.org/DesignIssues/LinkedData.html (accessed September 21, 2016).