1. IAP2: IAP2 spectrum of public participation. http://www.iap2.org/associations/4748/files/Kettering_FINALPreliminaryFindingsReport.pdf (2013)
2. The World Bank: age dependency ratio, old (% of working-age population). http://data.worldbank.org/indicator/SP.POP.DPND.OL/countries (2013)
3. Tossavainen T, Shiramatsu S, Ozono T, Shintani T (2013) Implementing a system enabling open innovation by sharing public goals based on linked open data. In: Modern advances in applied intelligence. 27th international conference on industrial engineering and other applications of applied intelligent systems, IEA/AIE 2014, Kaohsiung, Taiwan, June 3-6, 2014, Proceedings, Part II. Volume 8482 of lecture notes in computer science. Springer, pp 98–108
4. Shiramatsu S, Tossavainen T, Ozono T, Shintani T (2014) A goal matching service for facilitating public collaboration using linked open data. In: Electronic participation. Proceedings of the 6th IFIP WG 8.5 International conference, ePart 2014. Volume 8654 of lecture notes in computer science. Springer, pp 114–127
5. Sb, Rose J, Flak S (2008) The shape of eparticipation: characterizing an emerging research area. Govern Inf Q 25(3):400–428