@article{10_4153_S0008414X20000723,
     author = {Airey, Dylan and Jackson, Steve and Mance, Bill},
     title = {Some complexity results in the theory of normal numbers},
     journal = {Canadian journal of mathematics},
     pages = {170--198},
     year = {2022},
     volume = {74},
     number = {1},
     doi = {10.4153/S0008414X20000723},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008414X20000723/}
}