Information Processing Letters
Information Processing Letters > 2004 > 91 > 4 > 157-161
Information Processing Letters > 2004 > 91 > 4 > 163-169
Information Processing Letters > 2004 > 91 > 4 > 183-190
Information Processing Letters > 2004 > 91 > 4 > 195-200
Information Processing Letters > 2004 > 91 > 4 > 171-176
Information Processing Letters > 2004 > 91 > 4 > 191-193
Information Processing Letters > 2004 > 91 > 4 > 177-182