@article{GT_2017_21_2_a11,
     author = {Nadler, David},
     title = {Arboreal singularities},
     journal = {Geometry & topology},
     pages = {1231--1274},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {2017},
     doi = {10.2140/gt.2017.21.1231},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2017.21.1231/}
}