Leznoff, Clifford C.Marcuccio, Sebastian M.Greenberg, Shafrira2010-12-202010-12-201986Synthesis, 1986, 406-408.http://hdl.handle.net/10315/6426enSelective Synthesis of Binuclear and Trinuclear Phthalocyanines Covalently Linked by a One Atom Oxygen BridgeArticlehttps://www.thieme-connect.com/ejournals/pdf/synthesis/doi/10.1055/s-1986-31654.pdf