Walker M, Johnsen S, Rasmussen SOlander, Popp T, Steffensen J-P, Gibbard P, Hoek W, Lowe J, Andrews J, Bjorck S et al..  2009.  Formal definition and dating of the GSSP (Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records RID B-5560-2008 RID F-1111-2011. Journal of Quaternary Science. 24(1):3-17.