Dea-based models for best partner selection for merger Qingyuan Zhu, Jie Wu, Junfei Chu, Alireza Amirteimoori and Jiasen Sun RAIRO-Oper. Res., 51 4 (2017) 1345-1357 Published online: 29 November 2017 DOI: 10.1051/ro/2017031