1. Birkelo, C. C., andP. O. Rague: Accuracy of roentgen determination of activity of minimal pulmonary tuberculosis. Amer. J. Roentgenol.60, 303 (1948).
2. Bobrowitz, J. D., andA. Hurst: Minimal tuberculosis. Problems in roentgenologic interpretation. Radiology52, 519 (1949).
3. ——, andM. Martin: Minimal tuberculosis. The prognosis and clinical significance of a sanatorium treated group. Amer. Rev. Tuberc.56, 110 (1947).
4. Bonniot, A., J. Barrié etM. Finoelst: Sur les indications des résections pulmonaires pour lésions tuberculeuses minimes. Rev. Tuberc.21, 1122 (1957).
5. Braeuning, H.: Der Beginn der Lungentuberkulose der Erwachsenen, 2. Aufl., Leipzig: Georg Thieme 1951.