Raimund Ubar Jaak Kousaar Maksim Gorev Sergei Devadze Combinational fault simulation in sequential circuits. 2876-2879 2015 ISCAS https://doi.org/10.1109/ISCAS.2015.7169287 conf/iscas/2015 db/conf/iscas/iscas2015.html#UbarKGD15