TY  - JOUR
T1  - On the Position of Helium, Argon, and Krypton in the Scheme of Elements
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 63
SP  - 408
EP  - 411
PY  - 1898/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1898.0052
M3  - doi:10.1098/rspl.1898.0052
AU  - Crookes, W.
ER  -