@article {11573/1494385,
	title = {{Robust visual semi-semantic loop closure detection by a covisibility graph and CNN features}},
	journal = {ROBOTICS AND AUTONOMOUS SYSTEMS},
	volume = {{92}},
	number = {{False}},
	year = {2017},
	pages = {53-65},
	keywords = {Graph, Loop Closing, Place Recognition, Semantic}, {CNN Features},
	doi = {{10.1016/j.robot.2017.03.004}},
	author = {Cascianelli, Silvia and Costante, Gabriele and Bellocchio, Enrico and Valigi, Paolo and Fravolini, Mario Luca and Ciarfuglia, Thomas Alessandro}
}
