1. Beating Betz: energy extraction limits in a constrained flow field;Jamieson;J Sol Energy Eng,2009
2. The science of making more torque from wind: diffuser experiments and theory revisited;van Bussel;J Phys Conf Ser,2007
3. A preliminary report on the design and performance of a ducted windmill;Lilley,1956
4. Experiments with a diffuser-augmented model wind turbine;Gilbert;J Energy Resour Technol,1983
5. Research and development for shrouded wind turbines;Igra;Energy Conserv Manag,1981