1. [ACGIH] American Conference of Governmental Industrial Hygienists. 2001. Documentation for asphalt (bitumen) fumes. In: Documentation of the Threshold Limit Values and Biological Exposure Indices (Seventh Edition). Cincinnati (OH): ACGIH; p. 22.
2. [API] American Petroleum Institute. 2009. Asphalt category analysis and hazard characterization. Petroleum HPV testing group. Submitted to US EPA. p. 54. July 14.
3. Asphalt Institute Inc. 2015. The Bitumen Industry – A global perspective: production, chemistry, use, specification and occupational exposure (Third Edition). European Bitumen Association - Eurobitume. Information Series No. 230 (IS-230) p. 60.
4. [ARMA] Asphalt Roofing Manufacturers Association, Bitumen Waterproofing Association (BWA), National Roofing Contractors Association (NRCA), Roof Coatings Manufacturers Association (RCMA). 2011. The Bitumen Roofing Industry – A Global Perspective: Production, Use, Properties, Specifications and Occupational Exposure (Second Edition). Washington (DC): ARMA, BWA, NRCA and RCMA.
5. Elevated Cancer Mortality in a German Cohort of Bitumen Workers: Extended Follow-Up Through 2004