  We study a one-dimensional, two band model with short range electron-electron
repulsions (onsite $U$ and nearest-neighbour $V$ terms) and electron-phonon
coupling. We show that there is a region of $U$,$V$ and band filling in which
singlet superconductivity fluctuations are dominant. This region is absent
without electron-phonon interactions and includes large values of $U$,$V$.
