  The nearest level spacing distribution $P_c(s)$ of $d$-dimensional disordered
models ($d=1$ and 2) with long-range random hopping amplitudes is investigated
numerically at criticality. We focus on both the weak ($b^d \gg 1$) and the
strong ($b^d \ll 1$) coupling regime, where the parameter $b^{-d}$ plays the
role of the coupling constant of the model. It is found that $P_c(s)$ has the
asymptotic form $P_c(s)\sim\exp [-A_ds^{\alpha}]$ for $s\gg 1$, with the
critical exponent $\alpha=2-a_d/b^d$ in the weak coupling limit and
$\alpha=1+c_d b^d$ in the case of strong coupling.
