Gego: Dibujos sin papel. Museo de Bellas Artes (MBA), Caracas, 24/06/1984 – 01/08/1984
Ruth Vollmer & Gego: Thinking the Line. Ursula Blickle-Stiftung, Kraichtal, 13/09/2003 – 19/10/2003
Ruth Vollmer & Gego: Thinking the Line. Zentrum für Kunst und Medien (ZKM), Kalsruhe, 16/01/2004 – 21/03/2004
Ruth Vollmer & Gego: Thinking the Line. Miami Art Central (MAC), Miami, 21/09/2004 – 14/11/2004
Embracing Modernity: Venezuelan Geometric Abstraction. Patricia and Phillip Frost Art Museum, Miami, 13/10/2010 – 02/01/2011
Ruth Vollmer & Gego: Thinking the Line. Neue Galerie am Landesmuseum Joanneum, Graz, 02/07/2004 – 29/08/2004
