TY - JOUR AU - W. Harter AU - N. dos Santos BT - American Journal of Physics DA - Jan-01-1978 DO - 10.1119/1.11135 PY - 1978 EP - 264 T2 - American Journal of Physics TI - Double-group theory on the half-shell and the two-level system. II. Optical polarization UR - http://link.aip.org/link/?AJP/46/264/1\&Agg=doi VL - 46 SN - 00029505 ER -