Nikolaos Gaitanis Panagiotis Kostarakis Antonis M. Paschalis Totally Self Checking reconfigurable duplication system with separate internal fault indication. 316-321 1995 conf/ats/1995 Asian Test Symposium http://csdl.computer.org/comp/proceedings/ats/1995/7129/00/71290316abs.htm db/conf/ats/ats1995.html#GaitanisKP95