@inproceedings{10.1007/978-3-030-61739-4_8,
  author    = {St{\'e}rin, Tristan},
  editor    = {Schmitz, Sylvain
and Potapov, Igor},
  title     = {{B}inary expression of ancestors in the {C}ollatz graph},
  booktitle = {Reachability Problems},
  year      = {2020},
  publisher = {Springer International Publishing},
  pages     = {115--130}
}