https://www.itu.int/en/ITU-D/Climate-Change/Documents/GEM%202017/Global-E-waste%20Monitor%202017%20.pdf Global-E-waste_Monitor_2017_.pdf

https://unstats.un.org/unsd/environment/FDES/EGES5/Session%202_8UNU%20Balde%20Ewaste.pdf Session_2_8UNU_Balde_Ewaste.pdf