Alexander, P., "Ultrafine Titanium Dioxide Makes the Grade", Manufacturing Chemist 62(7):21-23 (1991). |
Fox, C., "Cosmetic Raw Materials: Literature and Patent Review 1989-1991", Cosmetics & Toiletries 106: 69-87 (1991). |
Brown, M. W. and Galley, E., "Testing UVA and UVB Protection From Microfine Titanium Dioxide", Cosmetics & Toiletries 105: 69-73 (1990). |
Fox, C., "Cosmetic Raw Materials: Literature and Patent Review 1988-1990", Cosmetics & Toiletries 105: 77-96 (1990). |
Diffey, B. L. and Robson, J., "A New Substrate to Measure Sunscreen Protection Factors Throughout the Ultraviolet Spectrum", J. Soc. Cosmet. Chem. 40: 127-133 (1989). |
Klein, K., "Formulating Effective Yet Elegant Sunscreen Products", DCI, pp. 22-30 (Aug. 1989). |