S. Yoakum

Dynamic tunneling ionization of excited hydrogen atoms: A precise experiment versus theories.

Richards, Koch, Sauér, 1992, Physical review letters.

Stueckelberg oscillations in the multiphoton excitation of helium Rydberg atoms: Observation with a pulse of coherent field and suppression by additive noise.

Koch, L. Sirko, P. Koch, 1992, Physical review letters.