TY  - GEN
AU  - Ali, Syed Riffat
TI  - Digital switching systems: system reliability and analysis
SN  - 0070010692
U1  - 621.395.12 
PY  - 2003///
CY  - New Delhi
PB  - Tata McGraw Hill
KW  - 621.395.12
KW  - Telephone switching systems electronic - reliability
KW  - Digital telephone systems reliability
ER  -