Zhang, X., Shen, J., Lu, Y., He, W., Xu, P., Zhao, X., Qiu, Z., Zhu, Z., Zhou, J., & Dong, X. (2015). Active Solar Thermal Facades (ASTFs): From concept, application to research questions. Renewable & sustainable energy reviews, 50, 32-63. https://doi.org/10.1016/j.rser.2015.04.108