TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.9.23 TI - Left-Handed Materials Debate Heats Up JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 9 IS - SP - 23 EP - PY - 2002/05/03/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.9.23 A1 - Minkel, JR ER -