TY  - JOUR
T1  - The Diffusion of Ions Produced in Air by the Action of a Radio-Active Substance, Ultra-Violet Light and Point Discharges
JF  - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934)
VL  - 195
SP  - 259
EP  - 278
PY  - 1900/01/01/
UR  - http://dx.doi.org/10.1098/rsta.1900.0028
M3  - doi:10.1098/rsta.1900.0028
AU  - Townsend, J.
ER  -