1. There is an extensive literature on both the technology of anodising and the mode of formation and structure of the anodic films. The following are examples: (a) Hubner (W.W.G.) ‘Aluminium – Surface Treatment and Colouring’ Ciba Review 1952 No. 92 (Basle: CIBA A.G.);.
2. various papers in Proc. Conf. Anodising Aluminium (London: The Aluminium Development Association 1962);.
3. various papers in Proc. Symp. Anodising Aluminium (London: The Aluminium Federation 1967);.