References
- T. R. A. Davey, The physical chemistry of lead refining, Pb—Zn—Zn '80, Proc. Symp., Las Vegas (edited by J. M. Cigan, T. S. Mackey and T. J. O'Keefe), pp. 477-505. TMS—AIME, Warrendale, Pennsylvania (February 1980).
- K. Mallaley and D. R. Morris, Analysis of the Betterton—Kroll process: the removal of bismuth from lead bullion, Primary and Secondary Lead Processing, Proc. Symp., Halifax (edited by M. L. Jaeck), pp. 253-264. Pergamon Press, Oxford (1989).