TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.7.6 TI - Surface Grime Explains Friction JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 7 IS - SP - 6 EP - PY - 2001/02/08/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.7.6 A1 - Sincell, Mark ER -