1. The GREENSOFT Model: A reference model for green and sustainable software and its engineering
2. Banking on Blockchain: Charting the Progress of Distributed Ledger Technology in Financial Services;McLean,2016
3. The Energy Efficiency of Bitcoinmhttps://www.cryptocoinsnews.com/energy-efficiency-bitcoin/
4. Bitcoin is Unsustainablehttp://motherboard.vice.com/read/bitcoin-is-unsustainable
5. Bitcoin Could Consume as Much Electricity as Denmark by 2020http://motherboard.vice.com/read/bitcoin-could-consume-as-much-electricity-as-denmark-by-2020