Nonetheless, his art and his writing influenced contemporaries such as El Lissitzky, Lyubov Popova and Alexander Rodchenko, as well as generations of later abstract artists, such as Ad Reinhardt and the Minimalists. He was celebrated posthumously in major exhibits at the Museum of Modern Art (1936), the Guggenheim Museum (1973) and the Stedelijk Museum in Amsterdam (1989), which has a large collection of his work. In the 1990s, the ownership claims of museums to many Malevich works began to be disputed by his heirs.