1. Boutelhig A, Bakelli Y, Hadj Mahammed I, Hadj AA (2012) Performances study of different PV powered DC pump configurations for an optimum energy rating at different heads under the outdoor conditions of a desert area. Energy 39:33–39
2. Funk A, e DeOreo WB (2011) Embedded energy in water studies study 3: end-use water demand profiles. In: Prepared by Aquacraft, Inc. for the California Public Utilities Commission Energy Division, Managed by California Institute for Energy and Environment, CALMAC Study ID CPU0052, 2011
3. Globale WaterAid Strategien 2015–2020 (2016). https://www.google.com.br/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwjG2IDT1J3XAhWHkJAKHX6NCwIQFggtMAE&url=https%3A%2F%2Fwww.wateraid.org%2Fuk%2Fpublications%2Four-strategy-portuguese&usg=AOvVaw1Wurp_Balu0XyoigLWZayR. Accessed 11 Oct 2017
4. Harishankar S, Sathish KR, Sudharsan KP, Vignesh U, Viveknath T (2014) Solar powered smart irrigation system. Adv Electron Electr Eng 4(4):341–346
5. Hmidet A, Gammoudi R, Hasnaoui O, Dhifaoui R (2014) Analog MPPT controller circuit used in photovoltaic pumping systems. In: IEEE Fifth international renewable energy congress (IREC), Hammamet, Tunisia, 25–27 March