TY - JOUR AU - Bai, LiBiao AU - Du, Qiang TI - Co-evolution efficacy of project portfolio based on strategic orientation JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2018 SP - 645 EP - 659 VL - 52 IS - 2 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ro/2017083/ DO - 10.1051/ro/2017083 LA - en ID - RO_2018__52_2_645_0 ER -