Information Processing Letters
Information Processing Letters > 2005 > 96 > 4 > 141-145
Information Processing Letters > 2005 > 96 > 4 > 146-150
Information Processing Letters > 2005 > 96 > 4 > 136-140
Information Processing Letters > 2005 > 96 > 4 > 128-135
Information Processing Letters > 2005 > 96 > 4 > 151-153
Information Processing Letters > 2005 > 96 > 4 > 123-127