1. Airy, G. B., Greenwich Meteorological Reductions, 1854–1873, Barometer. London, 1877. (See pp. 10, 14, 30 )
2. Alt, E., “Die Doppeloszillation des Barometers, insbesondere im arktischen Gebiete.” Meteor. Z. 26: 145–164 (1909).
3. Angot, A., “Étude sur la marche diurne du baromètre.” Ann. Bur. Météor. Fr.(1887).
4. Appleton, E. V., and Beynon, W. J. G., “Lunar Tidal Oscillations in the Ionosphere.” Nature, 162: 486 (1948).
5. Appleton, E. V., and Beynon, W. J. G., “Lunar Oscillations in the D-Layer of the Ionosphere.” Nature, 164: 308 (1949).