NLL Verslagen en verhandelingen XVIII - 1953. S. 426. Note on the general stress-strain relations of some ideal bodies showing the phenomena of creep and … NLL Verslagen en verhandelingen XX1 - 1959. TR F.184. A simplified method for the calculation of three-dimensional laminair boundary layers. 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 …