NLR Verslagen en verhandelingen XXXVI - 1970. TR G.50. Computer application of a linearised supersonic lifting surface theory on a certain class of wings. NLR Verslagen en verhandelingen XXXVI - 1970. TR 68069U. Binary flutter calculations with theoretical and empirical aerodynamic derivatives for a wing-control surface system in two-dimensional … NLR Verslagen en verhandelingen XXXVI - 1970. TR 68117U. Crack propagation in aluminium alloy sheet materials under flight simulation loading. NLR Verslagen en verhandelingen XXXVI - 1970. TR 69007U. Symmetrical transonic potential flows around quasi-elliptical aerofoil sections. NLR Verslagen en verhandelingen XXXVII - 1970. TR 69122 U. Investigations on the transonic flow around aerofoils.