TY - JOUR AU - S. Rae AU - Keith Burnett AU - John Cooper BT - Physical Review A DA - Jan-10-1994 DO - 10.1103/PhysRevA.50.3438 PY - 1994 SP - 3438 EP - 3446 T2 - Physical Review A TI - Generation and propagation of high-order harmonics in a rapidly ionizing medium VL - 50 SN - 1050-2947 ER -