Boundary integral method for the computation of the potential flow about ship configurations with lift and free surface effects / by C.M. van Beek, W.J. Piers and J.W. SlooffAerodynamic analysis of slipstream/wing/nacelle interference for preliminary design of aircraft configurations / by C.M. van Beek, W.J. Piers and B. OskamSectional prediction of 3D effects for separated flow on rotating blades / by H. Snel, R. Houwink and W.J. PiersCalculation of the flow around a swept wing, taking into account the effect of the three-dimensional boundary layer : pt. II: wing with laminar boundary layer on the lower surface / by B. van den Berg, W.J. Piers and E. de Boer