1. American Railway Engineering and Maintenance of Way Association (AREMA), 2007. Manual for Railway Engineering, Chapter 30, Section 30-A-1.
2. Sampling and analysis of particulate and gaseous polycyclic aromatic hydrocarbons from coal tar sources in the working environment;Andersson;Chemosphere,1983
3. ATSDR, 2000. “Toxicological Profile for Arsenic”. NTIS Accession No. PB2000-108021. Atlanta, GA: Agency for Toxic Substances and Disease Registry. pp. 466.
4. Groundwater Quality at a Creosote Waste Site;Bedient;Groundwater,1984
5. EC, 1994. European Parliament and Council Directive 94/60/EC of 20 December 1994, amending for the 14th time Directive 76/769/EEC on the approximation of the laws, regulations and administrative provisions of the Member States relating to restrictions on the marketing and use of certain dangerous substances and preparations. Official Journal of the European Communities. L365:1.