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)