Classical-electromagnetic and relativistic approaches to the problem of nonintegral atomic masses / by Daniel M. Siegel.
Abstract:
"This paper will be concerned with the contemporaneous development (through 1915) and subsequent interaction (through 1930) of the two approaches to the problem of nonintegral atomic weights and masses (that is, nuclear mass defects)."
Historical studies in the physical sciences Vol. 9 (1978), p. 323-360