1. Auer G, Kato H, Nasiell M, Roger V, Zetterberg A, Karlen L (1980) Cytophotometric DNA-analysis of atypical squamous metaplastic cells, carcinoma in situ, and bronchogenic carcinoma. In: Nieburgs HE (ed) Prevention and detection of cancer, vol. 2/Il. Marcel Dekker, New York Basel, pp 1467–1976
2. Carlens E (1979) Smoking and occupation. In: Ramstrom L (ed) The smoking epidemic. Fourth World Conference on Smoking and Health. Almqvist & Wiksell, Stockholm, pp 54–56
3. Frost JK, Gupta PK, Erozan YS et al. (1973) Pulmonary cytologic alterations in toxic environmental inhalation. Hum Pathol 4: 521–536
4. Gelboin HV (1972) Mechanisms of induction of drug metabolism enzymes. In: La Du BN, Mandel HG, Leong-Way E (eds) Fundamentals of drug metabolism and drug disposition. Williams and Wilkins, Baltimore, pp 279–307
5. Haglund S, Kinnman J, Malström L, Nasiell K, Nasiell M, Roger V (1979) The Sabbatsberg Hospital sputum cytologic study of roentgenologically occult bronchial cancer (in Swedish). Lakartidningen 76: 735–738