1. Ueber Filtration der Luft in Beziehung auf Fäulniss und Gährung
2. The Life of Pasteur;Vallery-Radot,1911
3. Principles and Methods of Sterilisation;Perkins,1956
4. Medical Research Council (1960), Lancet, ii, 1243 from (1960) 2nd M.R.C. Working Party Report and Pharm. J., 185, 546
5. Principles and Methods of Sterilisation;Perkins,1956