The Grey Relational Analysis of Quality Investigation of Concrete Containing Solar PV CellsHui-Mi Hsu, An Cheng, Sao-Jeng Chao, Jia-Ruey Chang, Li-Wei Teng and Sung-Ching ChenMATEC Web of Conferences, 27 (2015) 01006DOI: https://doi.org/10.1051/matecconf/20152701006