Covering $n$ points with fewest disks with fixed radius $\epsilon$

Question

The title says it all. I have a set of $n$ points in $\mathbb{R^{2}}$ and I am looking for an algorithm that tells me the fewest numbers of disks of radius $\epsilon$ that cover the set of $n$ points. Any ideas? Has this been done? I don't need anything incredibly efficient as the sets are not large.

Thanks