Tran, G., D. Tran, M. Tran, and P. Le. “Investigation of Ni Doped LiMn2O4 Used As Cathode Materials for High Voltage Lithium Batteries”. VNUHCM Journal of Science and Technology Development, Vol. 16, no. 3, Sept. 2013, pp. 48-59, doi:https://doi.org/10.32508/stdj.v16i3.1638.