1. Specification parameters of wires in overhead contact system;Bei,2010
2. Old conception constricting the development of domestic market on copper pipes;China Construction News,2001
3. Yearbook of nonferrous metals industry of China in 2012;China Non-ferrous Metals Industry Association,2012
4. China yearbook of transportation and communications;China Railway Corporation,2013
5. Historical evolution of anthropogenic aluminum stocks and flows in Italy;Ciacci;Resour Conserv Recycl,2013