TY - JOUR TI - A single southern exit of modern humans from Africa: Before or after Toba? U1 - Essential JF - Quaternary International AU - Oppenheimer, Stephen DO - 10.1016/j.quaint.2011.07.049 PY - 2012-5 EP - 99 SP - 88 SN - 10406182 VL - 258 ER -