(to be published in Phys. Rev.) reference 62a

presented at the Amsterdam Conference on Nuclear Reactions, July,) private communication from Asaro, Hollander, Perlman, Rasmussen, and Stephens I. Perlman and J. Rasmussen to appear in Handbook of Physics, edited by S. Flügge

reference 62a

Omitted endnote

(private communication from reference 6 reference 24

Rutherford, Chadwick, and Ellis, Radiations from Radioactive Substances (Cambridge University Press, Cambridge, England,), p. 247 ff

Risser, Lark-Horovitz, and Smith, 57, 355 (1940)

Theoret. Phys. (U.S.S.R.) 22, 284

Report of the International Physics Conference, Copenhagen, June,Kgl. Danske Videnskab. Selskab Mat. fys. Medd. 27, No. 16 (1953)

[N

Breit, Hull, and Gluckstern, 87 74

Malenka, Kruse, and Ramsey, 91, 1165 ]

C. L. McClelland S. M. thesis, Massachusetts Institute of Technology, August

Kgl. Danske Videnskab. Selskab. Mat. fys. Medd. 28, No. 1

and 906

(submitted for publication)

[Alkhazov, Andreyev, Greenberg, and Lemberg