1. Kiziroglou, M.E. and Yeatman, E.M., Materials and techniques for energy harvesting, Functional Materials for Sustainable Energy Applications, Woodhead Publ., 2012, pp. 541–572.
2. Chirap, A., Popa, V., Coca, E. and Potorac, D.A., A study on light energy harvesting from indoor environment: The autonomous sensor nodes, In 2014 International Conference on Development and Application Systems (DAS), IEEE, 2014, pp. 127–131.
3. Choudhary, P., Bhargava, L., Singh, V., Choudhary, M. and kumar Suhag, A., A survey–Energy harvesting sources and techniques for internet of things devices, Mater. Today: Proc., 2020, vol. 30, no. 1, pp. 52–56.
4. Dziadak, B., Makowski, Ł. and Michalski, A., Survey of energy harvesting systems for wireless sensor networks in environmental monitoring, Metrol. Meas. Syst., 2016, vol. 23, no. 4, pp. 495–512.
5. Milichko, V.A., Shalin, A.S., Mukhin, I.S., Kovrov, A.E., Krasilin, A.A., Vinogradov, A.V., Belov, P.A., and Simovski, C.R., Solar photovoltaics: current state and trends, Phys.-Usp., 2016, vol. 59, no. 8, pp. 727–772.