@article {uvigo:nlpsk, title = {Second order statistical properties of nonlinearly distorted PSK signals}, journal = {IEEE Communications Letters}, volume = {7}, number = {7}, year = {2003}, month = {July}, pages = {323{\textendash}325}, keywords = {Digital Communications, equalization, nonlinear channels, PSK modulation, second-order statistics}, author = {R. L{\'o}pez-Valcarce and Soura Dasgupta} }