Laetoli
Zaitsev, AN, Wenzel, T, Spratt, J, Williams, TC, Strekopytov, S, Sharygin, VV, Petrov, SV, Golovina, TA, Zaitseva, EO & Markl, G. (2011). Was Sadiman volcano a source for the Laetoli Footprint Tuff? Journal of Human Evolution 61(1) pp. 121–124.