Museum Ludwig, Köln : Gemälde, Skulpturen, Environments vom Expressionismus bis zur Gegenwart : Bestandskatalog /
Museum Ludwig.cn
Gohr, Siegfried.
Weiss, Evelyn.
Kolberg, Gerhard.
Munich : Prestel,
c1986.
History of the museum published in English under the title: Museum Ludwig, Cologne : paintings, sculptures, environments from Expressionism to the present day, and issued as a companion volume to the Bestandskatalog.
Bibliography: p. 293.
Museum Ludwig
Art, Modern