Information Processing Letters
Information Processing Letters > 2003 > 86 > 3 > 129-136
Information Processing Letters > 2003 > 86 > 3 > 113-119
Information Processing Letters > 2003 > 86 > 3 > 121-128
Information Processing Letters > 2003 > 86 > 3 > 143-148
Information Processing Letters > 2003 > 86 > 3 > 161-167
Information Processing Letters > 2003 > 86 > 3 > 137-141
Information Processing Letters > 2003 > 86 > 3 > 149-154