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- [8] SUBSCRIBER PATIENCE AND THE POST DIALLING DELAY FOR INTERNATIONAL AND NATIONAL LONG-DISTANCE CALLS ANNALES DES TELECOMMUNICATIONS-ANNALS OF TELECOMMUNICATIONS, 1981, 36 (11-1): : 595 - 601
- [9] A HYBRID INTEGRATED TRUNK AND SUBSCRIBER LINE INTERFACE IEEE INTERNATIONAL SOLID STATE CIRCUITS CONFERENCE, 1982, 25 : 204 - +