MR Collaboration Distance = 5 Doron Zeilberger coauthored with Yuri Bahturin MR2514649 Yuri Bahturin coauthored with Michael M. Parmenter MR1955609 Michael M. Parmenter coauthored with A. W. Chatters MR1360588 A. W. Chatters coauthored with Soumaya Makdissi Khuri MR0577719 Soumaya Makdissi Khuri coauthored with Ahmad Chalabi MR0634213