Regueiro Ferreira, R. M., and X. R. Doldán Garcia. “The Wind Employment in Spain (1995-2010): A Theoretical Approximation Applied to the Region of Galicia”. International Journal of Energy Economics and Policy, vol. 3, no. 1, Dec. 2012, pp. 75-86, https://www.econjournals.com/index.php/ijeep/article/view/369.