共 5 条
[1]
KOSTEN L, 1937, ELEK NACHRICHTEN TEC, V14, P5
[3]
Takacs L., 1967, COMBINATORIAL METHOD
[4]
TANGE FI, 1964, 4 INT TEL C LOND
[5]
WILKINSON RI, 1956, AT&T TECH J, V35, P421