In the fall of 1987, thanks to the artworks by Gaetano Brundu, Antonello Dessi, Luigi Mazzarelli, Anna Saba, Gabriella Locci, Annamaria Caracciolo, donated in exchanged to the printer Franco Girina, an art collector, the art booklet of 40 pages "Passport for Plexus Serpent", documenting the Serpent Plexus Art Co-Opera n4, In Gavoi, Sardinia, was printed by Celt Editions, with Sandro Dernini as editor and graphics by Gaetano Brundu with photos by Stefano Grassi.