Naum Gabo : sixty years of constructivism ; including catalogue raisonné of the constructions and sculptures ; [on the occasion of the Exhibition "Naum Gabo: Sixty Years of Constructivism" at the Dallas Museum of Art (September 29 - November 17, 1985) ... and The Tate Gallery, London (February 11 - April 20, 1987)] / ed. by Steven A. Nash ...