1. 1. Antonopoulos C. and Sakellaris P. (2011). Estimating computer depreciation using online auction data, Economics of Innovation and New Technology, vol.20, No.2, 183-204.
2. 2. Bakker J. D., van der Graaf H. J. And van Noortwijk J. M. (1998). “Model of Lifetime- Extending Maintenance”, Proceedings of the 8th International Conference on Structural Faults and Repair, London, United Kingdom, 13-15 July 1999. Edinburgh: Engineering Technics Press
3. 3. Cole C., Cooper T. and Gnanapragasam A. (2016). "Extending product lifetimes through WEEE reuse and repair: Opportunities and challenges in the UK," 2016 Electronics Goes Green 2016+ (EGG), Berlin, 2016, pp. 1-9
4. 4. DIR- Department of Information Resources (2013). PC Life Cycles- Guidelines for Establishing Life Cycles for Personal Computers, Austin, Texas
5. 5. EEB- European Environmental Bureau (2021). Coolproducts Don’t Cost The Earth, https://eeb.org/library/coolproducts-briefing/, 04.02.2021