TY  - BOOK
AU  - Griffiths, John M.,
TI  - Isdn explained: Worldwide network and applications technology 
SN  - 0471926752
AV  - TK5103 I73
PY  - 1990///
CY  - Chichester
PB  - J. Wiley
KW  - Redes digitales de servicios integrados
ER  -