1. L.W. Alvarez, et al., “Catalysis of Nuclear Reactions by μ Mesons,” Physical Review 105 (1957), 1127–1128.
2. F.C. Frank, “Hypothetical Alternative Energy Sources for the ‘Second Meson’ Events,” Nature 160 (1947), 525–527.
3. A. D. Sakharov, “Passive Mesons [in Russian],” Report, Academy of Sciences USSR, P.N. Lebedev Physics Institute (April 1948, unpublished); translated into English in Muon Catalyzed Fusion 4 (1989), 235-239; see also S.S. Gerstein and L.I. Ponomarev, “Forty Years Later: Comment on the A.D.S. Report,” ibid., 241-245.
4. Ya. B. Zel’dovich, “Reactions Caused by μ-Mesons in Hydrogen [in Russian],” Doklady Akademii Nauk SSSR 95 (1954), 493–496.
5. The New York Times, (December 29, 1956), CVI No. 36, B4, 1.