- Barrandon Y, Green H (1987) Three clonal types of keratinocyte with different capacities for multiplication. PNAS. https://doi.org/10.1073/pnas.84.8.2302
- Beaver CM, Ahmed A, Masters JR (2014) Clonogenicity: Holoclones and Meroclones Contain Stem Cells. PLOS ONE. https://doi.org/10.1371/journal.pone.0089834
- Pfeiffer MJ, Schalken JA (2010) Stem cell characteristics in prostate cancer cell lines. Eur Urol. https://doi.org/10.1016/j.eururo.2009.01.015