Abstract
We report the low- and high-temperature resistivity studies of $A 15$ compounds that have a low electron-phonon coupling constant ($\ensuremath{\lambda}$). The results do not agree with the model proposed by Gurvitch recently. We suggest further investigations before one starts using the universal plot of $\ensuremath{\lambda}$ vs $\ensuremath{\rho}(0)$, where $\ensuremath{\rho}(0)$ is the residual resistivity.
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