共 32 条
[1]
Carrier systems on long distance telephone lines
[J].
BELL SYSTEM TECHNICAL JOURNAL,
1928, 7 (03)
:564-629
[2]
BOGAN LB, 1954, AIEE T 1, V73, P498
[3]
BROWN AB, 1958, IRE CONV REC 4, P37
[4]
CARTER CW, 1946, AIEE T, V65, P1079
[5]
CARUTHERS RS, 1951, AT&T TECH J, V30, P1
[6]
CLARK AB, 1952, AIEE T 1, V71, P245
[7]
CLARK AB, 1925, AIEE T, V44, P481
[8]
DUNCAN JA, 1944, AIEE T, V63, P1032
[9]
EDSON JO, 1959, COMM ELECTRONICS, P832