TY - Front. Econ. China A1 - Yongsheng Xu T1 - Freedom in Welfare Economics Y1 - 2016-03-15 JF - Frontiers of Economics in China JO - Front. Econ. China SP - 104 EP - 122 VL - 11 IS - 1 UR - https://academic.hep.com.cn/fec N1 - 10.3868/s060-005-016-0007-7 ER -