1. H. Scholze, Glastech. Ber.
61 (1988) 161.
2. R. M. Potter and S. M. Mattson, ibid.
64 (1991) 16.
3. S. M. Mattson, Environ. Health Perspectives
102, supp. 5 (1994) 87.
4. J. C. Touray and P. Baillif, ibid.
102, supp. 5 (1994) 25.
5. P. Baillif and J. C. Touray, ibid.
102, supp. 5 (1994) 77.