On the order of the automorphism group of foliations

Let $\mathcal{F}$ be a holomorphic foliation with ample canonical bundle on a smooth projective surface $X$. We obtain an upper bound on the order of its automorphism group which depends only on $K_{\mathcal{F}}^2$ and $K_{\mathcal F}K_{X}$,providedthisgroupisfinite\mathrm{.}Here,$K_{\mathcal F}$and$K_{X}$ are the canonical bundles of $\mathcal{F}$ and $X$, respectively.