@article{ershkov_leshchenko_2021,  title={On the stability of Laplace resonance for Galilean moons (Io, Europa, Ganymede)},  volume={93},  ISSN={0001-3765},  url={https://doi.org/10.1590/0001-3765202120201016},  DOI={10.1590/0001-3765202120201016},  number={4},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={ERSHKOV, SERGEY and LESHCHENKO, DMYTRO},  year={2021},  pages={e20201016} }