Zhang et al. (2014)

Zhang Q., Wang X., Hou P., Wan W., Li R., Ren Y-F. & Ouyang Z. 2014. Quality and seasonal variation of rainwater harvested from concrete, asphalt, ceramic tile and green roofs in Chongqing, China. Journal of Environmental management 132. 178-187.
12 rain events May-Nov 2011, pilot scale, Yubei, China.