TY  - GEN
AU  - Zimmerman
TI  - Cryptography (E-Book): an introduction
PY  - 1990///
CY  - USA
PB  - 2000 Network Associates, Inc. and its Affiliated Companies.
KW  - E-Book
N1  - The Basics of Cryptography(Page-11) Phil Zimmermann on PGP(Page-39)
ER  -