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Schwartz, J. H.; Maresca, B. (децембар 2006). „Do Molecular Clocks Run at All? A Critique of Molecular Systematics”. Biological Theory. 1 (4): 357—371. CiteSeerX10.1.1.534.4060. doi:10.1162/biot.2006.1.4.357.
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Schwartz, J. H.; Maresca, B. (децембар 2006). „Do Molecular Clocks Run at All? A Critique of Molecular Systematics”. Biological Theory. 1 (4): 357—371. CiteSeerX10.1.1.534.4060. doi:10.1162/biot.2006.1.4.357.
Fedonkin, M.A.; et al. (2007), „New data on Kimberella, the Vendian mollusc-like organism (White sea region, Russia): palaeoecological and evolutionary implications”, Ур.: Vickers-Rich, Patricia; Komarower, Patricia, The Rise and Fall of the Ediacaran Biota, Special publications, 286, London: Geological Society, стр. 157—179, ISBN9781862392335, OCLC156823511, doi:10.1144/SP286.12