@article{10_4007_annals_2018_187_3_2,
     author = {Volodymyr Nekrashevych},
     title = {Palindromic subshifts and simple periodic groups of intermediate growth},
     journal = {Annals of mathematics},
     pages = {667--719},
     publisher = {mathdoc},
     volume = {187},
     number = {3},
     year = {2018},
     doi = {10.4007/annals.2018.187.3.2},
     mrnumber = {3779956},
     zbl = {06854655},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2018.187.3.2/}
}