@article{SIGMA_2018_14_a14,
     author = {George Lusztig and Geordie Williamson},
     title = {Billiards and {Tilting} {Characters} for $\mathrm{SL}_3$},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2018},
     volume = {14},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2018_14_a14/}
}