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"'The Gianni Bertini's adventure is obvious, and without concession, based on a golden rule, or job : not to be imprisoned in a formula. Do not only depend, and independence is there, on the only post-abstract painting . "
In the early Sixties, Bertini gets close to New Realism and, in 1965, he subscribes to the first Mec'art Manifest. In 1984, a retrospective is devoted to his work at the Centre National des Arts de Paris. In 1991, he produced a cycle of works on the Gulf War : "To remember" and in 1992 a new cycle on Antonin Artaud.
- Bertini (G.) - Krea (H.). Round about Midnight. Alès, P.A.B., 1961, small in-8. First edition with an original engraving by Bertini. Limited Edition to 50 copies, justified and signed by Bertini.
- [Bertini (G.)] – Solier (René de). Bertini. Paris, s.é., 1963, in-12. Facsimile of Solier's manuscript with compositions by Bertini and published for the painter exhibition at the Palais des Beaux-Arts in Brussels in 1963.