Thomas C J, McMeekin T A, Balis C
Appl Environ Microbiol. 1977 Oct;34(4):456-7. doi: 10.1128/aem.34.4.456-457.1977.
The number of bacteria retained by agar dipslides immersed in bacterial suspensions was dependent solely on suspension population density and was unaffected by the nutrient status of the agar surface or liquid, disturbance of the liquid, or bacterial motility and chemotaxis.