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- [23] Monopoly or Liberalization for Telecommunications. AEI Automazione Energia Informazione, 1982, 69 (06): : 497 - 505
- [28] POWER SUPPLIES FOR TELECOMMUNICATIONS. Telcom Report (English Edition), 1981, 4 (01): : 36 - 39
- [30] UNITED NATIONS AND THE WORLD OF TELECOMMUNICATIONS. Space communication and broadcasting, 1987, 5 (03): : 163 - 172