The Museum of Fine Arts in the Belgian city of Ghent is hosting an exhibition of 20th-century Russian avant-garde works – attributed to Popova, Rodchenko, Goncharova, Malevich, Kandinsky, and others – from the private foundation of a Russian businessman and collector. A group of scholars and professionals argue in an open letter that these works “have no exhibition history, have never before been reproduced in serious scholarly publications, and have no traceable sales records.”