?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Isaac+Afonso&rft.au=Barata+Carrelo%2C+Isaac+Afonso&rft.aulast=Barata+Carrelo&rft.date=2018&rft.title=Performance+of+a+40+kWp+PV+irrigation+demonstrator+combining+variable+and+constant+pressure+pumping&rft.btitle=35th+European+Photovoltaic+Solar+Energy+Conference+and+Exhibition&rft.genre=proceeding