Information Processing Letters
Information Processing Letters > 2004 > 91 > 3 > 121-128
Information Processing Letters > 2004 > 91 > 3 > 107-113
Information Processing Letters > 2004 > 91 > 3 > 135-140
Information Processing Letters > 2004 > 91 > 3 > 129-134
Information Processing Letters > 2004 > 91 > 3 > 115-120
Information Processing Letters > 2004 > 91 > 3 > 141-146