@inbook {liciotti2017pervasive,
	title = {Pervasive System for Consumer Behaviour Analysis in Retail Environments},
	booktitle = {Video Analytics. Face and Facial Expression Recognition and Audience Measurement},
	volume = {2},
	year = {2017},
	author = {Daniele Liciotti and Emanuele Frontoni and Adriano Mancini and Primo Zingaretti}
}
