1. Åberg F, Borggren C, Moberg AS et al (2010) Printed and tablet e-paper newspaper from an environmental perspective—a screening life cycle assessment. Int J Life Cycle Assess 16:138–147
2. Amazon.com (2016) Kindle E-reader, 6″ glare-free touchscreen display, Wi-Fi - includes SPecial offers (previous generation—7th).
https://www.amazon.com/Amazon-Kindle-6-Inch-Previous-Generation-7th/dp/B00I15SB16?th=1
. Accessed 1 Dec 2016
3. Andrae ASG, Edler T (2015) On global electricity usage of communication technology: trends to 2030. Challenges 6:117–157
4. Apple Inc. (2017) iPad Environmental Report
5. Baron N (2015) Words onscreen: the fate of reading in a digital world. Oxford University Press, New York