1. Carbon footprint of electronic deviceshttp://dx.doi.org/10.1117/12.2030271
2. Emerging Trends in Electricity Consumption for Consumer ICThttp://aran.library.nuigalway.ie/xmlui/handle/10379/3563
3. The Cloud Begins With Coalhttp://www.tech-pundit.com/wp-content/uploads/2013/07/Cloud_Begins_With_Coal.pdf
4. SMARTer 2020 Report: The Role of ICT in Driving a Sustainable Futurehttp://gesi.org/assets/js/lib/tinymce/jscripts/tiny_mce/plugins/ajaxfilemanager/uploaded/SMARTer%202020%20-%20The%20Role%20of%20ICT%20in%20Driving%20a%20Sustainable%20Future%20-%20December%202012._2.pdf