An evidence of mass-dependent differential kinetic freeze-out scenario observed in Pb-Pb collisions at 2.76 TeVHai-Ling Lao, Hua-Rong Wei, Fu-Hu Liu and Roy A. LaceyEur. Phys. J. A, 52 7 (2016) 203DOI: https://doi.org/10.1140/epja/i2016-16203-2