@article {1469,
	title = {Dominant Lyapunov exponent and approximate entropy in heart rate variability during emotional visual elicitation},
	journal = {Frontiers in Neuroengineering},
	volume = {5},
	year = {2012},
	keywords = {Bioengineering},
	author = {G. Valenza and Allegrini, P. and A Lanata and E. P. Scilingo}
}
