File:Gino Severini, 1911, La Danseuse Obsedante (The Haunting Dancer, Ruhelose Tanzerin), oil on canvas, 73.5 x 54 cm, private collection.jpg

Published 1911 and 1912

 * Die Futuristen. Umberto Boccioni, et al., Künstlerische Leitung: Zeitschrift Der Sturm. Hrsg. Herwarth Walden. 7. und 8. Tausend dieses Katalogs. Published 1911 in Berlin. Written in German.


 * The New-York Tribune (New York N.Y.), 3 March 1912, Retrieved from the Library of Congress