by Bernard D.T, Cole W.R, Gombas D.E, Pierson M, Savage R, Tompkin R.B, Wooden R.P
Published in Dairy, food and environmental sanitation : a publication of the International Association of Milk, Food and Environmental Sanitarians (1997)

by Speers, Jr, R, O'Grady, F W, Shooter, R A, Bernard, H R, Cole, W R
Published in The Lancet (British edition) (11.06.1966)