Lead isotope and trace element analysis of the Wuzhu coins from Doujiaqiao hoard, Tianjin City, North ChinaDing Ma, Caichao Gan and Wugan LuoEur. Phys. J. Plus, 136 2 (2021) 193DOI: https://doi.org/10.1140/epjp/s13360-021-01142-3