1. Das Di-Isocyanat-Polyadditionsverfahren (Polyurethane)
2. Respiratory and other hazards of isocyanates
3. Commission Regulation (EC) No. 552/2009 amending Regulation (EC) No. 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) as regards Annex XVII, in Official Journal, 2009, vol. L 164, pp. 7–31
4. NIOSH, U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, Publication No. 2004-116, Cincinnati, 2004
5. Progress in Study of Non-Isocyanate Polyurethane