@conference {GappmairCNSDSP08,
	title = {ML and EM Algorithm for non-data-aided SNR Estimation of Linearly Modulated Signals},
	booktitle = {International Symposium on Communication Systems, Networks and Signal Processing (CNSDSP)},
	year = {2008},
	pages = {530-534},
	keywords = {EM, ML, SNR estimation},
	author = {Wilfried Gappmair and R. L{\'o}pez-Valcarce and C. Mosquera}
}
