TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.4.12 TI - Gain without Pain JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 4 IS - SP - 12 EP - PY - 1999/09/03/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.4.12 A1 - Anonymous, ER -