1) Kummerow, C., Hong, Y., Olson, W. S., Yang, S., Adler, R. F, McCollum, J., Ferraro, R., Petty, G., Shin, D. -B. and Wilheit, T. T. : The Evolution of the Goddard Profiling Algorithm (GPROF) for Rainfall Estimation from Passive Microwave Sensors, J. Appl. Meteor., Vol. 40, pp. 1801-1820, 2001
2) Aonashi, K. and Liu, G. : Passive microwave precipitation retrievals using TMI during the Baiu period of 1999. Part I : Algorithm description and validation, J. Appl. Meteor., Vol. 39, pp. 2024-2037, 2000.
3) Best, A. C. : The size distribution of raindrops, Quart. J. Roy. Meteor. Soc., Vol. 76, pp. 16, 1950
4) Wakasugi, K., Fukao, S., Kato, S., Mizutani, A. and Matuo, M. : A direct method for deriving drop-size distribution and vertical air velocities from VHF Doppler radar spectra, J. Atmos. Oceanic Technol., 3, 623-629, 1986.
5) Sato, T., Doji, H., Iwai, H., Kimura, I., Fukao, S., Yamamoto, M., Tsuda, T. and Kato, S. : Computer processing for deriving drop-size distribution and vertical air velocities from VHF Doppler radar spectra, Radio Science, Vol. 25, No. 5, pp. 961-973, 1990.