1. Ackerman, P.K., 1986, “A Study of Sulfide Mineral Collectors,” Ph.D. Thesis, The Pennsylvania State University. Thesis supervised by F.F. Aplan and R.R. Klimpel.
2. Ackerman, P.K., Harris, G.H., Klimpel, R.R., and Aplan, F.F., 1984, “Effect of alkyl substituents on performance of thionocarbamates as copper sulfides and pyrite collectors,” Reagents in The Mineral Industry, M.J. Jones and R. Oblatt, eds., Inst. Min. and Met., London, pp. 69–78.
3. Ackerman, P.K., Harris, G.H., Klimpel, R.R., and Aplan, F.F., 1987a, “Evaluation of flotation collectors for copper sulfides and pyrite: I. Common sulfhydryl collectors,” Int. J. Min. Proc, Vol. 21, pp. 105–127.
4. Ackerman, P.K., Harris, G.H., Klimpel, R.R., and Aplan, F.F., 1987b, “Evaluation of flotation collectors for copper sulfides and pyrite: II. Non-sulfhydryl collectors,” Int. J. Min. Proc, Vol. 21, pp. 129–140.
5. Ackerman, P.K., Harris, G.H., Klimpel, R.R., and Aplan, F.F., 1987c, “Evaluation of flotation collectors for copper sulfides and pyrite: III. Effect of xanthate chain length and branching,” Int. J. Min. Proc, Vol. 21, pp. 141–156.