1. Feigin, D. S. (1988),J. Thorac. Imag. 3, 33–48.
2. The American College of Rheumatology 1990 (1990),Arthritis Rheum. 33, 1065-1144.
3. Addis, B. J. (1990), inThe Lungs: Systemic Pathology Series, vol. 10, 2nd ed., Corrin, B., ed., Churchill Livingstone, Edinburgh, pp. 299–315.
4. Alarcòn-Segovia, D. (1980),Clin. Rheum. Dis. 6, 319–338.
5. Cordier, J. F. (1994),Pneumologie 6-024-D10, 20p.