Nonparametric Identifiability of Causal Representations from Unknown Interventions - von Kügelgen, Julius; Besserve, Michel; Wendong, Liang; Gresele, Luigi; Kekić, Armin; Bareinboim, Elias; Blei, David; Schölkopf, Bernhard (Advances in Neural Information Processing Systems, 2023)