Autor:	Nielsen-Marsh, Christina M., Richards, Michael P., Hauschka, Peter V., Thomas-Oates, Jane E., Trinkaus, Erik, Pettitt, Paul B., Karavanić, Ivor, Poinar, Hendrik, Collins, Matthew J.
Zdroj:	Proceedings of the National Academy of Sciences of the United States of America, 2005 Mar . 102(12), 4409-4413.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/3374995 Zobrazit plný text záznamu