Bärbel Birkelbach in Verner Panton: The Collected Works. Ed. Alexander von Vegesack and Mathias Remmele. Exh. cat., Vitra Design Museum. Weil am Rhein, 2000, pp. 134, 138, 140–44, 322, ill. p. 326, discusses the collaboration with the Mira-X textile house; reproduces a similar design as "Onion" from the collection "Linea II,' produced in 1979.