Sady Sousa Filho

Energy Supply to Electronic Switching Exchanges in Telecommunications

Sady Sousa Filho, 1978 .

Features and Requirements Concerning Reliability of DC Power Supply for Telecommunications

Sady Sousa Filho, 1981 .

Standardization of DC Power Supply Systems for Telecommunications

Sady Sousa Filho, 1978, INTELEC - 1978 International Telephone Energy Conference.