Quazi N. Ahmed Susan V. Vrbsky Maintaining Security in Firm Real-Time Database Systems. 83-90 1998 conf/acsac/1998 ACSAC http://csdl2.computer.org/dl/proceedings/acsac/1998/8789/00/87890083.pdf db/conf/acsac/acsac1998.html#AhmedV98