1. UK Greenhouse Gas Inventory, 1990–2012. Annual report for submission under the framework convention on climate change. Department of Energy and Climate Change, UK NIR; 2014, issue 1 [ISBN: 978-0-9573549-4-4].
2. Tassou SA. Potential for solar energy in food manufacturing, distribution and retail. Report to DEFRA, AC045; 2007. p. 25.
3. DEFRA – Sinclair Knight Merz. Examination of the global warming potential of refrigeration in the food chain. Evidence review findings; 2011.
4. Carbon dioxide in North American supermarket;Hinde;ASHRAE J,2009
5. Performance characteristics of the R404a indirect refrigeration system using CO2 as a secondary refrigerant;Yoon;Int J Eng Sci Res Technol,2014