Semrau, D; Saavedra, G; Lavery, D; Killey, RI; Bayvel, P; (2017) A Closed-Form Expression to Evaluate Nonlinear Interference in Raman-Amplified Links. Journal of Lightwave Technology , 35 (19) pp. 4316-4328. 10.1109/JLT.2017.2741439.