Zhang, Xingxing, Shen, Jingchun, Lu, Yan, He, Wei, Xu, Peng, Zhao, Xudong, Qiu, Zhongzhu, Zhu, Zishang, Zhou, Jinzhi, Dong, Xiaoqiang, "Active Solar Thermal Facades (ASTFs): From concept, application to research questions", Renewable and Sustainable Energy Reviews, 2015