TY - JOUR AU - M. Thorpe AU - Jun Ye BT - Applied Physics B DA - 2008-06 DO - 10.1007/s00340-008-3019-1 PY - 2008 SP - 397 EP - 414 T2 - Applied Physics B TI - Cavity-enhanced direct frequency comb spectroscopy VL - 91 SN - 0946-2171 ER -