TY - CONF AU - O. Bely BT - Proceedings of the Physical Society DA - 1966-04 DO - 10.1088/0370-1328/87/4/123 PY - 1966 SP - 1010 EP - 1011 T2 - Proceedings of the Physical Society TI - An evaluation of the exchange contribution in the scattering of electrons by positive ions UR - http://iopscience.iop.org/0370-1328/87/4/123/ VL - 87 SN - 0370-1328 ER -