8R D Prengnan. Improved grid materials for valve regulated lead/acid batteries [J]. The Battery Man, 1997, (April): 2-6.
9R D Prengaman. The metallurgy and performance of cast and rolled lead alloys for battery grids. The Battery Man, 1997,(9): 16-32.
10K Harris, R J Hill, and D A J Rand. Crystalline phase composition of positive plate in lead/acid traction batteries under simulated electric vehicle service. J Power Sources, 8 (1982): 175.