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2. (3) Sivasegaram, S., Secondary Parameters Affecting the Performance of Resistance-type Vertical-axis Wind Rotors, Wind Engineering, Vol. 2, No. 1 (1978), pp. 49-59.
3. Experimentally determining the optimum design configuration for savonius rotors.
4. (5) Bowden, G. J. and McAleese, S. A., The Properties of Isolated and Coupled Savonius Rotors, Wind Engineering, Vol. 8, No. 4 (1984), pp. 271-288.