1. P. F. SANDERS and W. A. HAMILTON: in ‘Biologically induced corrosion’, 47; 1986, Houston, TX, National Association of Corrosion Engineers.
2. G. EIDSA and E. RISBERG: in ‘Biologically induced corrosion’, 109; 1986, Houston, TX, National Association of Corro-sion Engineers.
3. Int. Conf. on ‘Biologically induced corrosion’, Gaithers-burg, MD, June 1985, National Association of Corrosion Engineers.