TY - JOUR AU - Wang, Le AU - Zhang, Hong-Yu AU - Wang, Jian-Qiang AU - Wu, Guo-Fang TI - Picture fuzzy multi-criteria group decision-making method to hotel building energy efficiency retrofit project selection JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2020 SP - 211 EP - 229 VL - 54 IS - 1 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ro/2019004/ DO - 10.1051/ro/2019004 LA - en ID - RO_2020__54_1_211_0 ER -