The buckling of thin cylindrical shells under axial compression. D.M.A. Leggett — 1954 Publications de l'Institut Mathématique [Elektronische Ressource]
The small deflection of a normally loaded square plate, elastically supported along its edges. H.W. Parsons; D.M.A. Leggett — 1957 Publications de l'Institut Mathématique [Elektronische Ressource]