@article {12400,
	title = {Single-Stage Amplifier biased by Voltage-Combiners with Gain and Energy-Efficiency Enhancement},
	journal = {IEEE Transactions on Circuits and Systems II: Express Briefs},
	volume = {65},
	year = {2017},
	pages = {266-270},
	author = {Ricardo P{\'o}voa and Nuno Lourenco and Ricardo Martins and Antonio Canelas and Nuno Horta and Jo{\~a}o Goes}
}
