@article {DiCIoGri_RAS15,
	title = {Non-Parametric Calibration for Depth Sensors},
	journal = {Robotics and Autonomous Systems},
	volume = {74},
	year = {2015},
	pages = {309{\textendash}317},
	doi = {10.1016/j.robot.2015.08.004},
	url = {http://www.sciencedirect.com/science/article/pii/S0921889015001724},
	author = {Di Cicco, Maurilio and Iocchi, Luca and Grisetti, Giorgio}
}
