@article{SLC_2020-2021_82_a1,
     author = {Colin Defant},
     title = {Stack-Sorting {Preimages} of {Permutation} {Classes}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {2020-2021},
     volume = {82},
     url = {http://geodesic.mathdoc.fr/item/SLC_2020-2021_82_a1/}
}