In 1969 he also exhibited in Paris for the first time along with New York for the event "Nine at Castelli" where, with Giovanni Anselmo, they were the only European artists, faced with artists of Process Art, Antiform and Post-minimal artists.
Gilberto Gil | Bebel Gilberto | João Gilberto | Astrud Gilberto | Gilberto Santa Rosa | Gilberto Kassab | Gilberto | Sebastião Gilberto | Gilberto Zorio | Gilberto Oliveira Souza Junior | Gilberto Mendes | Gilberto Freyre | Gilberto de Almeida Rêgo |
Key figures closely associated with the movement are Giovanni Anselmo, Alighiero Boetti, Pier Paolo Calzolari, Luciano Fabro, Jannis Kounellis, Mario Merz, Marisa Merz, Giulio Paolini, Pino Pascali, Giuseppe Penone, Michelangelo Pistoletto, Emilio Prini, and Gilberto Zorio.