Spasov, Filip, and Vesselin Petkov. ??????: ???????????, ???????????, ???????? ? ??????????????? ?? ?????????? ?? ????? ? ??????? ??? ???????? In IT4Sec Reports. ?????: ???????? ?? ????????????? ? ?????????????? ??????????, 2015.

Spasov, Filip, and Todor Tagarev. ?????: ???????????, ???????????, ???????? ? ??????????????? ?? ?????????? ?? ????? ? ??????? ??? ???????? In IT4Sec Reports. ?????: ???????? ?? ????????????? ? ?????????????? ??????????, 2015.