Manatbayev, R.K., A. Georgiev, R. Popov, D. Dzhonova-Atanasova, Kuikabayeva А.А., & E.M. Zulbukharova. "The effect of design parameters on energy characteristics of Darrieus rotor." International Journal of Mathematics and Physics [Online], 7.1 (2016): n. pag. Web. 26 Sep. 2017