Wikipedia about the prediction of the Aharonov–Bohm effect:
Werner Ehrenberg (1901–1975) and Raymond E. Siday first predicted the effect in 1949.
What was the theoretical basis for this prediction?
And BTW, an older question about Has The Aharonov-Bohm Effect Been Experimentally Proven? is not answered clearly. It seems that the claimed Aharonov–Bohm effect in 1959 was a prediction too. So which different theoretical basis was used by Aharonov and Bohm?