New data are presented and analyzed, along with previous data, in a refinement of an earlier method of obtaining the density of states from measurements of the slope of the critical field at Tc and ρ₀. For Nb₃Sn the data are consistent with the idea that Tc is a function mainly of $N(0)$. For Nb₃Ge the data do not indicate such a simple behavior, and a discussion is given of this discrepancy in terms of anomalies in the sample properties.
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Ghosh et al. (1978) studied this question.
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