@article{scharff2021online,
  title={Online 3-Dimensional Path Planning with Kinematic Constraints in Unknown Environments Using Hybrid A* with Tree Pruning},
  author={Willners, Jonatan Scharff and Gonzalez-Adell, Daniel and Hern{\'a}ndez, Juan David and Pairet, {\`E}ric and Petillot, Yvan},
  journal={Sensors},
  volume={21},
  number={4},
  year={2021},
  article-number = {1152},
  issn = {1424-8220},
  doi = {10.3390/s21041152}
}