1. BAuA (Federal Institute for Occupational Safety and Health) (2008) German Agency for Workplace Health and Safety, Committee on Hazardous Substances. Technical rules for hazardous substances, substitution, TRGS 600, Germany
2. Bjørn A, Hauschild MZ (2015) Introducing carrying capacity-based normalisation in LCA: framework and development of references at midpoint level. Int J Life Cycle Assess 20:1005–1018
3. Carolina Center for Computational Toxicology (2010) ToxPi, Toxicological Priority Index graphical user interface (ToxPi GUI), Carolina Center for Computational Toxicology, North Carolina, US. [2016-06-29]: http://comptox.unc.edu/toxpi.php
4. CPA (2013) GreenScreen® for safer chemicals comparative chemical hazard assessment (CHA) method, clean production action (CPA), Broadway, US. [2016-06-29]: www.greenscreenchemicals.org/
5. Dutch Ministry of Housing (2002) Dutch Ministry of Housing, Spatial Planning and Environment, Quick Scan, The Hague, Netherlands. [2016-06-29]: www.subsport.eu/images/stories/pdf_archive/substitution_tools/15_quick_scan_en.pdf