1. COGEN Europe Position Paper. Micro-CHP – A cost-effective solution to save energy, reduce GHG emissions and partner with intermittent renewables,2013
2. Delta Energy & Environment, http://www.delta-ee.com/ (update 1.7.2014).
3. COGEN Europe Briefing paper on Smart Grid and micro-CHP,2011
4. FuelCellToday, The Fuel Cell Industry Review, 2013.
5. TOKIO GAS, http://www.tokyo-gas.co.jp/techno/stp1/00h1_e.html (update 1.7.2014).