TY - JOUR
AU - Andrey Todorov
AU - Velizar Shalamanov
AU - Todor Tagarev
BT - Information & Security: An International Journal
DO - https://doi.org/10.11610/isij.0121
IS - 2
LA - eng
PY - 1998
SP - 109
EP - 113
T2 - Information & Security: An International Journal
TI - Library Update
VL - 1
ER -