R.L. Garwin, D. Hutchinson, et al.
Physical Review Letters
By storing polarized positive muons in a magnetic field for as many as 1200 revolutions, a new upper limit to the electric dipole moment has been determined. The value is {Mathematical expression}, consistent with time-reversal invariance. © 1961 Società Italiana di Fisica.
R.L. Garwin, D. Hutchinson, et al.
Physical Review Letters
R.L. Garwin
Science
G. Charpak, P.J.M. Farley, et al.
Il Nuovo Cimento
R.L. Garwin
Nature