Liu, Z., Cichocki, N., Bonk, F., Günther, S., Schattenberg, F., Harms, H., … Müller, S. (1969). Ecological Stability Properties of Microbial Communities Assessed by Flow Cytometry. MSphere, 3(1). https://doi.org/10.1128/mSphere.00564-17 (Original work published 1969)