References
- BERGERON, T., and SWOBODA, G., 1924: Wellen und Wirbel an einer quasistationiren Grenzfläche über Europa. Veriift. des. Geophys. Inst. der Univ. Leipzig, III, 2, pp. 63–172.
- BERGGREN, R., 1952a: The Distribution of Temperature and Wind Connected with Active Tropical Air in the Higher Troposphere and some Remarks Concern-ing Clear Air Turbulence at High Altitude. Tellus, 4, I, PP. 43–53.
- BERGGREN, R., 195213: On Frontal Analysis in the Higher Troposphere and the Lower Stratosphere. Ark iv for Geolysik, 2 (in print).
- MCINTYRE, D. P., 1950: On the Air-Mass Temperature Distribution in the Middle and High Troposphere in Winter. Journal of Meteor., 7, 2, pp. 10 1-107.
- Climatological Data, U.S. Weather Bureau, Washington.
- Daily Series Synoptic Weather Maps, Northern Hemisphere Sea Level and 500 Millibar Charts with Synoptic Data Tabulations. U.S. Weather Bureau, Washington.
- Daily Upper Air Bulletin. U.S. Weather Bureau, Washington.
- Daily Weather Report of the Meteorological Office, Upper Air Section. Air Ministry, London.
- Monthly Weather Review, U.S. Weather Bureau, Washington.