TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.18.17 TI - Hidden Twists and Turns JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 18 IS - SP - 17 EP - PY - 2006/12/01/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.18.17 A1 - Schirber, Michael ER -