1. Nordicom: Nordicom-Sveriges Internetbarometer 2012. En bearbetning av Mediebarometern 2012. In: Nordicom (2013)
2. Gard, D.L., Keoleian, G.A.: Digital versus print. Energy performance in the selection and use of scholarly journals. J. Ind. Ecol. 6(2), 115–132 (2002)
3. Kozak, G.: Printed scholarly books and e-book reading devices: a comparative life cycle assessment of two book options, vol. CSS03-04. In: Center for Sustainable Systems, University of Michigan (2003)
4. Moberg, Å., Johansson, M., Finnveden, G., Jonsson, A.: Printed and tablet e-paper newspaper from an environmental perspective—a screening life cycle assessment. Environ. Impact Assess. Rev. 30(3), 177–191 (2010)
5. Weber, C.L., Koomey, J.G., Matthews, H.S.: The energy and climate change impacts of different music delivery methods. In: Report to Microsoft Corporation and Intel Corporation (2009)