When was the Dutch artist who was part of Art Concret born?
Theo van Doesburg Theo van Doesburg (] , 30 August 1883 – 7 March 1931) was a Dutch artist, who practiced painting, writing, poetry and architecture. He is best known as the founder and leader of De Stijl.
Paul Citroen Roelof Paul Citroen (15 December 1896 – 13 March 1983) was a German-born Dutch artist, art educator and co-founder of the New Art Academy in Amsterdam. Among his best-known works are the photo-montage Metropolis and the 1949 Dutch postage stamps.