Between 1966 and 1967, four artists (Buren, Mosset, Parmentier, Toroni) exhibit their works in common during important artistitic demonstrations under the name of B.M.P.T, made of their initials. They wanted to denunce the illusonnism and the mystification of the work of art. In presenting simple and evident forms, they search to oblige the viewer to face the work of art, to see it in its pure existence, without any aesthetic, historic or emotional reference. In an approach closed to the Minimal Art, those artists try to reach a "ground zero" of the painting, and use for it mute, neutral and repetitive patterns. Today each artist goes on individually his artistic carreer.