R. Mehtani Keith Baker C. M. Huizer P. J. Hynes Jos van Beers Macro-testability and the VSP. 739-748 1990 ITC http://dx.doi.org/10.1109/TEST.1990.114090 conf/itc/1990 db/conf/itc/itc1990.html#MehtaniBHHB90