1. Ali-Shtayeh MS, MacDonald JD, Kabashima J (1991) A method for using commercial ELISA tests to detect zoospores of Phytophthora and Pythium species in irrigation water. Plant Dis 75: 305–311
2. Ashworth LJ Jr, McCutcheon OD, George AG (1972) Verticillium albo-atrum: the quantitative relationship between inoculum density and infection in cotton. Phytopathology 62: 901–903
3. Baker R (1965) The dynamics of inoculum. In: Baker KF, Snyder WC (eds) Ecology of soil-borne plant pathogens. Univ California Press, Berkeley, pp 395–419
4. Baker R (1969) Use of population studies in research on plant pathogens in soil. In: Toussoun TA, Bega RV, Nelson PE (eds) Root diseases and soil-borne pathogens. Univ California Press, Berkeley, pp 11–15
5. Baker R (1971a) Simulators in epidemiology — can a simulator of root disease be built? Epidemiology of plant diseases, vol 1. Adv Study Inst, Wageningen, pp 1–2