Composition with Red Blue and Yellow working relationship, they were contacted by Theo van Doesburg, a painter who frequently wrote about art for different periodicals and whom is considered the propagandist of the De Stijl movement. He invited Mondrian and van der Leck to join his initiative to start an artistic review periodical. They agreed and the result of this was the journal entitled De Stijl. Together they formed an artistic collective that consisted not only of painters but also architects; the movement was confined to strictly Dutch areas due to war. These artists cannot be considered the same. For example, not all De Stijl artists
Jef Van der Veken Hubert van Eyck and identified the Master of Flémalle with Rogier van der Weyden (current scholarship identifies the Master of Flémalle with Robert Campin, the teacher of Rogier van der Weyden). These publications aroused lively polemics with reputed art historians. At the 1935 World Exhibition in Brussels three works, of which the visible surface had been executed mainly by Van der Veken, where exhibited under the name of Rogier van der Weyden: one as an original work by van der Weyden (the Madonna with Child or 'Renders Madonna', now in the Museum of Fine Arts in Tournai) and two as