1. The mode of growth of bacterial colonies;BISSET K. A.;J. Path. Bact.,1939
2. Contributions to the cytology of bacteria. Quart;DOBELL C. C.;J. Microscop. Sci., n.s.,1911
3. -3 Untersuchungen uber Sarcina;ELLI;Streptococcus und Spirillum. Zentr. Bakt. Parasitenk., I., Orig.,1902
4. The intimate structure of the bacterial cell;ELLIS D.;Brit. Med. J.,1922
5. ELLIs D. 1932 Sulphur bacteria. Longmans Green and Company London.