@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}
}
