Later, in 1916, while in Barcelona and within a small circle of refugee artists that included Albert Gleizes and his wife Juliette Roche, Marie Laurencin, Olga Sacharoff, Robert Delaunay and Sonia Delaunay, he started his Dada periodical "391" (published by Galeries Dalmau), modeled on Stieglitz's own periodical. He continued the periodical with the help of Marcel Duchamp in the United States. In Zurich, seeking treatment for depression and suicidal impulses, he had met Tristan Tzara, whose radical ideas thrilled Picabia. Back in Paris, and now with his mistress Germaine Everling, he was in the city of "les assises dada" where André Breton, Paul Éluard, Philippe Soupault and Louis Aragon met at Certa, a Basque bar in the Passage de l'Opera. Picabia, the provocateur, was back home.