Pitis, C., and Z. . Al-Chalabi. “Investigating Ageing Process of Die Cast Aluminum in Squirrel Cage Rotors Exposed to Heavy-Duty Load Conditions”. Journal of Environmental Science and Engineering Technology, vol. 5, no. 2, Nov. 2017, pp. 44-51, doi:10.12974/2311-8741.2017.05.02.2.