TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.2.12 TI - Separating the Good Hearts from the Bad JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 2 IS - SP - 12 EP - PY - 1998/09/15/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.2.12 A1 - Anonymous, ER -