  The superconducting gap in a CeRu$_{2}$ single crystal is investigated by
point contacts. BCS-like behavior of the gap $\Delta $ in the temperature range
below T$_{c}^{*}<$T$_{c}$, where T$_{c}$ is the critical temperature, is
established, indicating the presence of a gapless superconductivity region
(between T$_{c}^{*}$ and T$_{c}$). The pair-breaking effect of paramagnetic
impurities, supposedly Ce ions, is taken into consideration using the
Scalski-Betbeder-Matibet-Weiss approach based on Abrikosov-Gorkov theory. It
allows us to recalculate the superconducting order parameter $\Delta ^{\alpha}
$ (in the presence of paramagnetic impurities) and the gap $\Delta ^{P}$ (in
the pure case) for the single crystal and for the previously studied
polycrystalline CeRu$_{2}$. The value 2$\Delta^{P}$(0)$ \approx $2 meV, with
2$\Delta ^{P}$(0)$/$k$_{B}$T$_{c} \approx $3.75, is found in both cases,
indicating that CeRu$_{2}$ is a ``moderate'' strong-coupling superconductor.
