References
- Randolph TG. Human Ecology and Susceptibility to the Chemical Environment. CC Thomas, Springfield, IL 1962
- American College of Physicians. Position Paper. Clinical ecology. Ann Int Med 1989; 111: 168–178
- Cullen MR. The worker with multiple chemical hypersensitivities: An overview. Occup Med 1987; 2: 655–661
- Kuhn TS. The Structure of Scientific Revolutions, 2nd Ed. University of Chicago Press, Chicago 1970