TY - JOUR T1 - Electronic and magnetic properties of 3d transition-metal atom adsorbed graphene and graphene nanoribbons A1 - Sevincli, H. A1 - Topsakal, M. A1 - Durgun, E. A1 - Ciraci, S. JA - Physical Review B Y1 - 2008 VL - 77 SP - 195434-1 EP - 7 ER -