Write down the Green's function, in terms of u and v for the sturm liouville operator

$\displaystyle {d \over dx}\left[ p(x) {dy \over dx} \right] + V(x) $

where u and v are the two solutions of the differential equation

$\displaystyle {d \over dx}\left[ p(x) {dy \over dx} \right] + V(x)y=0 $

Thanks for any help.