TY - JOUR T1 - The Mobilities of the Ions Produced by Rontgen Rays in Gases and Vapours JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 82 IS - 553 SP - 165 EP - 166 PY - 1909/05/06/ UR - http://dx.doi.org/10.1098/rspa.1909.0018 M3 - doi:10.1098/rspa.1909.0018 AU - Wellisch, E. ER -