Explaining the Imperfection of the Molecular Clock of Hominid Mitochondria Loogväli, Eva-Liis ; Kivisild, Toomas ; Margus, Tõnu ; Villems, Richard Abstract Publication: PLoS ONE Pub Date: December 2009 DOI: 10.1371/journal.pone.0008260 Bibcode: 2009PLoSO...4.8260L