Citation: Hr. Cox, The external forces on an airship structure with special reference to the requirements of rigid airship design, AERONAUT J, 103(1022), 1999, pp. 182-186
Citation: Hr. Cox et K. Norton, Looking forward again - Notes on the needs, probabilities and possibilities in aeronautics, AERONAUT J, 103(1022), 1999, pp. 215-220