1. Heavy lifting during pregnancy – a hazard to the fetus? A prospective study;Ahlborg;International Journal of Epidemiology,1990
2. American Conference of Governmental Industrial Hygienists, Inc. (ACGIH), 1996. Documentation of the Threshold Limit Values and Biological Exposure Indices, 6th Edition. American Conference of Governmental Industrial Hygienists, Cincinnati, OH.
3. Work in pregnancy;Chamberlain;American Journal of Industrial Medicine,1993
4. Work and pregnancy. Review of the literature and policy discussion;Chavkin;Obstetrical and Gynecological Survey,1986
5. Anthropometry of seated women during pregnancy: defining a fetal region for crash protection research;Culver;Human Factors,1990