1. International Telecommunication Union, Geneva, Switzerland‘CCIR Rec. 452-5: ‘Prediction procedure for the evaluation of microwave interference between stations on the surface of the earth at frequencies above about 0.7 GHz’’, 1992 Recommendations of the CCIR, Series RPN
2. International Telecommunication Union, Geneva, Switzerland‘CCIR Rec. 620-1: ‘Propagation data required for the calculation of coordination distances in the frequency range 1–40 GHz’’, 1992 Recommendations of the CCIR, Series RPN
3. ‘Further studies of rain effects on earth-space propagation’, Scientific Report, MW-93, McGill University, Stormy Weather Group, Montreal, Canada, 1980