TY  - BOOK
AU  - "Delfs, Hans"
AU  - "Knebl, Helmut"
TI  - Introduction to crytography: principles and applications
SN  - 3-540-42278-1
U1  - 005.82 
PY  - 2002///
CY  - U.K.
PB  - Springer
ER  -