1. C. G. Abbot , 1960 . Forecast of United States precipitation through 1967,Nat. Acad. Sci., Washington (April 1960 Meeting).
2. H. P. Berlage , 1957 . Is the Southern Oscillation in meteorology becoming the classical example of a terrestrial cycle steered by the solar cycle?Verh. Kon. Ned. Geol. Mijn Gen., Geol. Ser. 18, V. Meinesz Gedenkboek, 13 -21 .
3. H. P. Berlage, and H. J. Boer , 1959 . On the extension of the Southern Oscillation throughout the world during the period 1949 July I, up to 1957 July I,Geofisca Pura e Applicata(Milano), 44, 287 -295 .
4. K. F. Bowden , 1959 . The effect of water density on the mean slope of the sea surface,Symposium on Unified European Levelling Network(Liverpool).
5. The effect of water density on the mean slope of the sea surface