@article{10_1090_jams_905,
     author = {Achar, Pramod and Makisumi, Shotaro and Riche, Simon and Williamson, Geordie},
     title = {Koszul duality for {Kac\^a€“Moody} groups and characters of tilting modules},
     journal = {Journal of the American Mathematical Society},
     pages = {261--310},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {2019},
     doi = {10.1090/jams/905},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/jams/905/}
}