The History of the Theory of Structures: From Arch Analysis ...
Karl-Eugen Kurrer
Duddeck, H., 1972. Traglasttheorie der Stabtragwerke. In: Beton-Kalender, vol. 61, pt. II, pp. 621 – 676. Berlin: Wilhelm Ernst & Sohn. Duddeck, H., 1990. Wilhelm Flügge verstorben. Der Bauingenieur, vol. 65, p. 486. Duddeck, H., Ahrens, H., ...