(EN) Dorling Kindersley, 1980s, in DC Comics Year By Year A Visual Chronicle, 2010, p. 209, ISBN 978-0-7566-6742-9.
«The prestigious Justice League of America got a bit easier to join, thanks to writer Gerry Conway and artist Chuck Patton. Marking the debut of camouflaging hero Gypsy, the shockwave-casting Vibe, and the second generation hero Steel, this landmark comic saw many of the more famous League members step down in order to make way for a younger roster to carry on their legacy.»