%0 Journal Article %A Bai, LiBiao %A Du, Qiang %T Co-evolution efficacy of project portfolio based on strategic orientation %J RAIRO - Operations Research - Recherche Opérationnelle %D 2018 %P 645-659 %V 52 %N 2 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/ro/2017083/ %R 10.1051/ro/2017083 %G en %F RO_2018__52_2_645_0