1. Andersen A, Høgetveit AC, Magnus K (1980) A follow-up study among Norwegian nickel workers. In: Brown SS, Sunderman FW Jr (eds) Nickel Toxicology. Academic Press, London, pp 31–32
2. Andrews PM (1976) Microplicae: characteristic ridge-like folds of the plasmalemma. J Cell Biol 68:420–429
3. Arai M, Kani T, Sugihara S, Matsumura K, Miyata Y, Shinohara Y, Ito N (1974) Scanning and transmission electron microscopy of changes in the urinary bladder in rats treated with N-butyl-N-(4-hydroxybutyl)nitrosamine. GANN 65:529–540
4. Becci PJ, McDowell EM, Trump BF (1978) The respiratory epithelium. IV. Histogenssis of epidermoid metaplasia and carcinoma in situ in the hamster. J Natl Cancer Inst 61:577–586
5. Boutwell RK (1974) The function and mechanism of promoters of carcinogenesis. CRC Crit Rev Toxicol 2:419–443