1. Measurements on a Savonius rotor with variable gap;Newman,1974
2. Preliminary tests of a high-speed vertical-axis windmill model;South;N.A.E. Report LTR-LA-74,1971
3. A wind tunnel investigation of a 14 ft diameter vertical-axis windmill;South;N.A.E. Report LTR-LA-105,1972
4. Some design aspects of high-speed vertical-axis wind turbines;Templin,1976