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Barber, C. L.; Iruela-Arispe, M. L. (2006). «The Ever-Elusive Endothelial Progenitor Cell: Identities, Functions and Clinical Implications». Pediatric Research59 (4 Pt 2): 26R-32R. PMID16549545. doi:10.1203/01.pdr.0000203553.46471.18.
Seaberg, R. M.; Van Der Kooy, D. (2003). «Stem and progenitor cells: The premature desertion of rigorous definitions». Trends in Neurosciences26 (3): 125-131. PMID12591214. doi:10.1016/S0166-2236(03)00031-6.
Barber, C. L.; Iruela-Arispe, M. L. (2006). «The Ever-Elusive Endothelial Progenitor Cell: Identities, Functions and Clinical Implications». Pediatric Research59 (4 Pt 2): 26R-32R. PMID16549545. doi:10.1203/01.pdr.0000203553.46471.18.