1. Experimental studies on early pulmonary tuberculosis of the “adult type”
2. W. Pagel, F.A.H. Simmonds, N. Macdonald, Pulmonary Tuberculosis (London; p. 193 (figs. 119-123)).
3. The early changes of pulmonary tuberculosis in lobectomy specimens
4. W. Pagel, F.A.H. Simmonds, N. Macdonald, Pulmonary Tubereulosis (London; p. 170).