• Hierarchical identification of untestable faults in sequential circuitsRaik, Jaan; Ubar, Raimund-Johannes; Krivenko, Anna; Kruus, Margus10th Euromicro Conference on Digital System Design Architectures, Methods and Tools, DSD 2007 : 29-31 August 2007, Lübeck, Germany : proceedings2007 / p. 668-671 : ill http://dx.doi.org/10.1109/DSD.2007.4341539