Afro, l’itinerario astratto. Opere 1948-1975, curated by Luciano Caramel, Galleria dello Scudo, Verona, 7 October - 19 November 1989, catalogue, texts by Luciano Caramel, Giorgio Cortenova, Fabrizio D’Amico and Erich Steingräber, catalogue of the works and biography by Francesco Tedeschi, technical sheets by Francesco Sandroni