Literature: Marie-Luise Otten, Peter Brüning. Bilder - Objekte - Druckgraphik, Cologne 1988, No. 423; Ausst.Kat. Peter Brüning. Retrospective. Museum Küppersmühle for Modern Art. Duisburg 2007, plate 64/65; exh. Cat. In the Force Field of Signs. Peter Brüning zum Achtzigsten, Galerie Schlichtenmaier Grafenau/Stuttgart 2009, cat.no. 15, ill. p. 22

Peter Brüning is one of the most important initiators, pioneers and bearers of meaning of the German Informel. Marie-Luise Otten has called him the "lyricist of German Informel". In the early 1960s, he sought new ways of translating reality into "landscape paintings" in a sign-like manner. In his poetic-gestural handwriting, which makes Brüning's pictures unmistakable, a conception of nature is expressed that is determined by artistic problems such as movement, time, space and the syntax of his gestural "signs". His untitled oil painting from 1961 is compelling in its combination, confrontation, and interweaving of broad brushstrokes soaked in oil paint, which stand out in contrast against the light canvas. Despite seemingly unstructured and impulsive brushwork, the overall impression of the painting, as is so typical of Brüning's painting style, results in a harmonious whole.