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2. Gmelin Handbuch “Palladium” 1942, p. 272.
3. Maitlis, P. M. (The Organic Chemistry of Palladium, Vol. 1, Academic, New York— London 1971, p. 43).
4. Henry, P. M. (Palladium Catalysed Oxidation of Hydrocarbons, Reidet, Dordrecht — Boston 1980, p. 6).
5. Yatsimirski, A.; Ugo, R. (Inorg. Chem. 22 [1983] 1395/7).