Martin Naedele Dacfey Dzung Michael Stanimirov Network Security for Substation Automation Systems. 25-34 2001 conf/safecomp/2001 SAFECOMP http://link.springer.de/link/service/series/0558/bibs/2187/21870025.htm db/conf/safecomp/safecomp2001.html#NaedeleDS01