1. The generation and propagation of ocean waves and swell, I. Wave periods and velocities;Barber;Phil. Trans., ser. A,1948
2. An experimental investigation of wind-generated waves;Johnson;Trans. Amer. Geophys. Union
3. Period increase of ocean swell;Sverdrup;Trans. Amer. Geophys. Union,1947
4. Wind, sea, and swell; theory of relations for forecasting;Sverdrup,1947