Aerodynamics of wind turbines : IEA joint action ; 15th symposium, Athens, November 2001
Aerodynamics of wind turbines : IEA joint action ; 14th symposium, Boulder, December 2000
Blade row interference effects in axial turbomachinery stages : February 9 - 12, 1998
Aerodynamics of wind turbines : IEA joint action ; 12th symposium, Lyngby, December 3. - 4., 1998
Aerodynamics of wind turbines : IEA joint action ; 11th symposium, Petten, December 18 - 19, 1997
The use of computers as a design tool, symposium, Neubiberg, 3-6 September 1979 (AGARD conf. proc.)