Symmetry energy extracted from fragments in relativistic energy heavy-ion collisions induced by 124,136Xe Chun-Wang Ma, Jie Pu, Hui-Ling Wei, Shan-Shan Wang, Heng-Li Song, Sha Zhang and Li Chen Eur. Phys. J. A, 48 6 (2012) 78 Published online: 04 June 2012 DOI: 10.1140/epja/i2012-12078-5