Semrau, D;    Galdino, L;    Sillekens, E;    Lavery, D;    Killey, RI;    Bayvel, P;      (2019)    Modulation format dependent, closed-form formula for estimating nonlinear interference in S+C+L band systems.                     In:  45th European Conference on Optical Communication (ECOC 2019).    IEEE: Dublin, Ireland.       Green open access