1. European Technology Platform for Electricity Networks for the Future. 2016. The SmartGrid European Technology Platform. European Technology Platform for Electricity Networks for the Future. www.smartgrids.eu/ETPSmartGrids. Accessed on February 1, 2016.
2. Transforming the energy sector: the evolution of technological systems in renewable energy technology
3. Mochizuki, Shoji (2013). Personal interview, ECHONET Consortium, Tokyo, October 17.