1. H. Fiege, in: Ullmann’s Encyclopedia of Industrial Chemistry, Vol. A8, VCH, Weinheim, 1985, p. 25.
2. A. Tasaka, H. Hosaka, I. Dohgane, US Patent 4032581 (1977), to Sumitomo Chemical Company Ltd.
3. J.S. Beck, W.O. Haag, in: G. Ertl, H. Knözinger, J. Weitkamp (Eds.), Handbook of Heterogeneous Catalysis, Vol. 4, Wiley-VCH, Weinheim, 1996, p. 2123.
4. Production of p-cymene from α-limonene over silica supported Pd catalysts