Wang, W.H., Wong, M.H., Leharne, S. and Fisher, B. (1998) Fractionation and biotoxicity of heavy metals in urban dusts collected from Hong Kong and London. Environmental Geochemistry and Health, 20 (4). pp. 185-198. ISSN 0269-4042 (Print), 1573-2983 (Online) (doi:https://doi.org/10.1023/A:1006530300522)