1. and , The Mathematical Theory of Huygen's Principle, 2nd Edit., Oxford University Press, London, 1950.
2. Water waves on sloping beaches
3. and , Formulas and Theorems for the Special Functions of Mathematical Physics, 2nd Edit., Springer, Berlin, 1948.
4. Die Beugung des Lichtes an einem ebenen, rechteckigen Keil von unendlicher Leitfähigkeit