N. CAZACU, Improving the Powerful Behavior of an Experimental Model of Savonius Turbine (S-Rotor) with Coupled Aerodynamic Additional Blades, The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Bd. 41, Nr. 2, S. 49-53, Juni 2018.