TY - JOUR PB - American Physical Society ID - 10.1103/Physics.3.16 TI - Phonon lasers gain a sound foundation JF - Physics JA - Physics J1 - PHYSICS VL - 3 IS - SP - 16 EP - PY - 2010/02/22/ UR - http://link.aps.org/doi/10.1103/Physics.3.16 A1 - Khurgin, Jacob B. ER -