Murphy, William J.; Eizirik, Eduardo; O'Brien, Stephen J.; Madsen, Ole; Scally, Mark; Douady, Christophe J.; Teeling, Emma; Ryder, Oliver A.; Stanhope, Michael J.; de Jong, Wilfried W.; Springer, Mark S. (2001). «Resolution of the Early Placental Mammal Radiation Using Bayesian Phylogenetics». Science. 294 (5550): 2348–2351. PMID11743200. doi:10.1126/science.1067179.
Murphy, William J.; Eizirik, Eduardo; O'Brien, Stephen J.; Madsen, Ole; Scally, Mark; Douady, Christophe J.; Teeling, Emma; Ryder, Oliver A.; Stanhope, Michael J.; de Jong, Wilfried W.; Springer, Mark S. (2001). «Resolution of the Early Placental Mammal Radiation Using Bayesian Phylogenetics». Science. 294 (5550): 2348–2351. PMID11743200. doi:10.1126/science.1067179.