1. Palmén, E., On the formation and structure of tropical hurricanes, Geophysica, 1948, 3: 26–38.
2. Izawa, T., On the mean wind structure of typhoon, Typhoon Research Laboratory, Tech. Note No. 2, Met. Research Inst. Japan. Met. Agency, Mar., 1964.
3. Koteswaram, P., On the structure of hurricanes in the upper troposphere and lower stratosphere, Mon. Wea. Rev., 1967, 95(8): 541–564.
4. Palmén, E., Newton, C. W., Atmospheric Circulation Systems, New York and London: Academic Press, 1969.
5. Bao, C., The development of southwest vortex and typhoon over the South China Sea, Acta Meteorologica Sinica (in Chinese), 1981, 39(1): 123–127.