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

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

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

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

Thanks for any help.