TY - JOUR AU - Sydney Geltman BT - Journal of Physics B: Atomic, Molecular and Optical Physics DA - Apr-01-1996 DO - 10.1088/0953-4075/27/2/004 PY - 1994 SP - 257 EP - 270 T2 - Journal of Physics B: Atomic, Molecular and Optical Physics TI - Excitation and ionization of hydrogen atoms by ultra-intense fields VL - 27 SN - 0953-4075 ER -