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3. Recommendation: Propagation data and prediction methods required for the design of Earth-space telecommunication systems, ITU-R P.618–10, 2009.
4. Recommendation: Specific attenuation model for rain for use in prediction methods. ITU-R P.838–3, 2003.
5. Sridhar, M., Raju, K. P., & Rao, C. S. (2012). Estimation of rain attenuation based on ITU-R model in Guntur (A.P) India. ACEEE International Journal on Communication, 03(02), 6.