@article {potena2019agricolmap, title = {AgriColMap: Aerial-Ground Collaborative 3D Mapping for Precision Farming}, journal = {IEEE Robotics and Automation Letters}, volume = {4}, number = {2}, year = {2019}, pages = {1085{\textendash}1092}, publisher = {IEEE}, author = {Potena, Ciro and Khanna, Raghav and Nieto, Juan and Siegwart, Roland and Nardi, Daniele and Pretto, Alberto} }