Réunion des musées nationaux - Grand Palais. Galeries Nationales du Grand Palais, Paris, France (3/19/2018 – 7/30/2018), National Gallery, Prague, Czech Republic (9/15/2018 – 1/20/2019), and Ateneum Art Museum, Helsinki, Finland (2/11/2019 – 6/16/2019): "Kupka. Pioneer of Abstraction"