refering dampers 2 stator side

Hello everyone.I have below parameters for a 3.7 kw synchronous generator and want to refer damper windings R and L to stator side but I don't know how.

I have found a formula like.

r'=(3/2)*((Ns/Nj)^2)*rj (and like this for L)

r' is refered rj. and (Ns/Nj)is stator2damper turns ratio.

but there is not (Ns/Nj) for dampers in parameters (it is present just for filed winding).