1. Albanese, S., De Vivo, B., Lima, A., & Cicchella, D. (2007). Geochemical background and baseline values of toxic elements in stream sediments of Campania region (Italy). Journal of Geochemical Exploration, 93(1), 21–34. https://doi.org/10.1016/j.gexplo.2006.07.006.
2. Alloway, B. J. (Ed.). (2013). Heavy metals in soils, Vol. 22 (3rd ed.). Dordrecht: Springer. https://doi.org/10.1007/978-94-007-4470-7.
3. Magnusson, B., & Örnemark, U. (eds.) (2014). Eurachem guide: The fitness for purpose of analytical methods – A laboratory guide to method validation and related topics, (2nd ed.). Available from http://www.eurachem.org.
4. Begum, Z., Balaram, V., Ahmad, S. M., Satyanarayanan, M., & Rao, T. G. (2007). Determination of trace and rare earth elements in marine sediment reference materials by ICP-MS: comparison of open and closed acid digestion methods. Atomic Spectroscopy, 28(2), 41.
5. Berner, R. A. (1980). Early diagenesis: a theoretical approach. New York: Princeton University Press.