@article{10_4153_S0008439520000521,
     author = {Bridy, Andrew and Doyle, John R. and Ghioca, Dragos and Hsia, Liang-Chung and Tucker, Thomas J.},
     title = {A question for iterated {Galois} groups in arithmetic dynamics},
     journal = {Canadian mathematical bulletin},
     pages = {401--417},
     year = {2021},
     volume = {64},
     number = {2},
     doi = {10.4153/S0008439520000521},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008439520000521/}
}