1. Anodic Oxide Films;Young,1961
2. Werkstoff Aluminium und seine Anodische Oxydation;Schenk,1948
3. The Surface Treatment and Finishing of Aluminium and its Alloys;Wernick,1964
4. Processes for the Anodic Oxidation of Aluminium and Aluminium Alloy Parts, DTD. 910C,1951
5. Kaiser Aluminum Co., US Pat. 3 031 387 (7.12.59)