Monica A. Nichols Funk, J. A., Davies, P. R., & Nichols, M. A. (2001). Longitudinal study of Salmonella enterica in growing pigs reared in multiple-site swine production systems. VETERINARY MICROBIOLOGY, 83(1), 45–60. https://doi.org/10.1016/S0378-1135(01)00404-7 Funk, J. A., Davies, P. R., Morrow, W. E. M., & Nichols, M. A. (2000). Temporal patterns of Salmonella enterica prevalence and serotypes in breeding and growing swine populations. Proceedings of the 9th Symposium of the International Society for Veterinary Epidemiology and Economics, Breckenridge, Colorado, USA, August 6-11 2000, 203. Funk, J. A., Davies, P. R., & Nichols, M. A. (2000). The effect of fecal sample weight on detection of Salmonella enterica in swine feces. JOURNAL OF VETERINARY DIAGNOSTIC INVESTIGATION, 12(5), 412–418. https://doi.org/10.1177/104063870001200504