Fagas, G., Gallagher, J. P., Luca, G. and Paul, D. J. (2017) Energy challenges for ICT. In: Fagas, G., Gammaitoni, L., Gallagher, J. P. and Paul, D. J. (eds.) ICT - Energy Concepts for Energy Efficiency and Sustainability. Intech, pp. 1-36. ISBN 9789535130116 (doi: 10.5772/66678)

Ferre Llin, L. and Paul, D. (2017) Thermoelectrics, photovoltaics and thermal photovoltaics for powering ICT devices and systems. In: Fagas, G., Gammaitoni, L., Gallagher, J. P. and Paul, D. J. (eds.) ICT - Energy Concepts for Energy Efficiency and Sustainability. InTech: Rijeka, pp. 215-237. ISBN 9789535130116 (doi: 10.5772/65983)

Fagas, G., Gammaitoni, L., Gallagher, J. P. and Paul, D. J. (Eds.) (2017) ICT - Energy Concepts for Energy Efficiency and Sustainability. Intech. ISBN 9789535130116