Schmidt, Harry.

• A general review of the fundamentals of the lifting line theory
• Bilder aus dem Arboretum
• Dos ṿelṭ-bild
• Jürgen Ovens
• Lapislazulisteine für Ostdeutsche
• Mathematical procedure for the determination of the lift distribution of elliptical wings. I. For integral values of the parameter k
• Photographic method of measuring the trajectories and oscillations of projectiles in ballistic tunnels. Part II
• Relativity and the universe
• Theory of the lift distribution of arbitrarily twisted elliptical wings