NLL Verslagen en verhandelingen XVIII - 1953. F.129. An approach to lifting surface theory. NLL Verslagen en verhandelingen XX1 - 1959. TR F.206. Linearized theory of lifting sweptback wings at sonic speed. NLL Verslagen en verhandelingen XXII - 1959. W1. Boundary lvalue problems in lifting surface theory. NLL Verslagen en verhandelingen XXIII - 1961. TR G.1 Theoretical determination of the power efficiency and overall flow behaviour of free jet wind tunnels with … NLR Verslagen en verhandelingen XXVIII - 1964. TR S.597. Results of strain measurements performed on a polystyrene sweptback box beam with a non-swept centre part … NLR Verslagen en verhandelingen XXXVI - 1970. TR G.49. A new approach to the numerical solution of the equation of subsonic lifting surface theory. 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 …