Systems & Control Letters
Systems & Control Letters > 1995 > 25 > 4 > 257-263
Systems & Control Letters > 1995 > 26 > 3 > 195-201
Systems & Control Letters > 1996 > 27 > 1 > 1-7
Systems & Control Letters > 1996 > 27 > 3 > 181-185
Systems & Control Letters > 1996 > 29 > 2 > 101-110
Systems & Control Letters > 1996 > 29 > 3 > 139-145
Systems & Control Letters > 1997 > 31 > 4 > 199-205
Systems & Control Letters > 1997 > 32 > 4 > 185-192
Systems & Control Letters > 1998 > 33 > 4 > 241-251