TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.20.9 TI - How Steady is a Molecular Clock? JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 20 IS - SP - 9 EP - PY - 2007/09/19/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.20.9 A1 - Monroe, Don ER -