1. and ‘North Wind 4 kilowatt wind system development: Phase I—Design and analysis, Phase II—Technical report’, Subcontractor Report Submitted to Rocky Flats Wind Energy Research Center, Subcontract PF08501C, 1982.
2. ‘An introduction to the small wind turbine project’, AWEA Wind Power '97 Conf., Austin, TX, 1997.
3. Airfoil Boundary-Layer Development and Transition with Large Leading-Edge Roughness
4. and , ‘Boundary-layer trips on airfoils at low Reynolds numbers’, AIAA Paper 97-0511, 1997.
5. and , ‘A wind tunnel investigation of the aerodynamic effects of leading-edge tape on airfoils at low Reynolds numbers’, Report AAE 98-05, UILU ENG 95-0505, Department of Aeronautical and Astronautical Engineering, University of Illinois at Urbana-Champaign, 1998.