@misc{indiciaea4ca7a6a1230,
  title = {GPS/Optical/Inertial Integration for 3D Navigation Using Multi-Copter Platforms},
  author = {Dill, Evan T. and Young, Steven D. and Uijt De Haag, Maarten},
  year = {2017},
  url = {https://ntrs.nasa.gov/citations/20170005464},
  note = {Source identifier: 20170005464}
}