14.
REFERENCES
341
G.—Rutherf0rd, Chadwick and Ellis, Radiatiomom Radioaciive
Substances, Macmillan (1930).
H.—Gamow, Âtomic Nuclei, Clarendon Press, Second Edition
(1937).
I.——Fleischmann and Bothe, Ergeänisse der Exaktm Naturwimenscizczften, Vol. XIII (1934) and Vol. XIV (1935).