TY - Front. Eng A1 - Qingxian AN, Xuyang LIU, Shijie DING T1 - Efficiency measurement for mixed two-stage nonhomogeneous network processes with shared extra intermediate resources Y1 - 2020-06-15 JF - Frontiers of Engineering Management JO - Front. Eng SP - 259 EP - 274 VL - 7 IS - 2 UR - https://journal.hep.com.cn/fem N1 - 10.1007/s42524-019-0080-x ER -