1. “Methoden der Organische Chemie”;Houben-Weyl,1976
2. “Copper Coordination Chemistry: Biochemical and Inorganic Perspectives”;Karlin,1983
3. a) General Electric Co., Neth. Appl. 295,748, C.A. 64:9843a; b) Dynamit Nobel A.G., Neth. Appl.6,610,017, C.A. 66:116152t; c) Hay, A.S., U.S. Patent 3,432,466, C.A. 70:97406t; d) Toyo Rayon Co. Ltd., Fr.1,523,821, C.A. 71:13525r; e) Hori, R., Kataoka, T., Kodama, H., Japan 7001,633, C.A. 72:112034g; f) Hay, A.S., Polym. Eng. Sci. 16 (1976)1.
4. Structure of copper 4-(n,n- dimethylamino)pyridine complexes and their catalytic activity in the oxidative coupling of 2,6-dimethylphenol
5. C.Y. Hsu and J. E.Lyons, Eur. Pat. Appl. EP 93,540, C.A. 100:67996f; EP 104,937, C.A. 101:54719p; EP 105,067, C.A. 101:54721h; EP 107,427, C.A. 101:170888s; U.S. Patent 4,442,036, C.A. 101:6829c; U.S. 4,482,756, C.A. 102:113013z.