TY - JOUR ID - 10442/6885 A1 - Themelis, S. I. A1 - A1 - Mercouris, T. D. A1 - A1 - Nicolaides, C. A. Y1 - 2000/// T1 - Quantum-mechanical versus semiclassical calculations of dc-field-induced tunneling rates for helium for field strengths in the range 0.067-1.0 a.u JF - Physical Review A VL - 6102 IS - 2 SN - 1050-2947 U3 - 10.1103/physreva.61.024101 PB - American Physical Society SP - 4EP - UR - https://hdl.handle.net/10442/6885 ER -