WASET
    Paula Ferreira and  Madalena Araújo and  M.E.J. O’Kelly,  Electricity Power Planning: the Role of Wind Energy.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2010, vol. 47(11). 1683 - 1687
    [viewed 07 May 2024]. Available from: https://publications.waset.org/pdf/12565.