@article {uvigo:fourthpower, title = {Cost minimisation interpretation of fourth power phase estimator and links to multimodulus algorithm}, journal = {IEE Electronics Letters}, volume = {40}, number = {4}, year = {2004}, month = {19 February}, pages = {278{\textendash}279}, keywords = {constant modulus, Digital Communications, equalization, multimodulus, phase estimation}, author = {R. L{\'o}pez-Valcarce} }