@inproceedings {roewekaemper15icra,
	author = {J{\"o}rg R{\"o}wek{\"a}mper and Michael Ruhnke and Bastian Steder and Burgard, Wolfram and Tipaldi, Gian Diego},
	title = {{Automatic Extrinsic Calibration of Multiple Laser Range Sensors with Little Overlap}},
	booktitle = {Proceedings of the IEEE International Conference on Robotics and Automation (ICRA)},
	year = {2015}
}