1. A major low-level air current near the Indian Ocean during the northern summer
2. Interhemispheric transport of air in the lower troposphere over the western Indian Ocean
3. Geophys. Men.;Findlater,1971
4. ICAO 1969 Document 8812 AN-CONF/6 (1969) 6th Air Navigation Conference, Montreal.
5. Meteorological Office 1945 Meteorological Air Observer's Handbook, H.M.S.O., London.