by Condo, Peter D, Sumpter, Sheldon R, Lee, Milton L, Johnston, Keith P
Published in Industrial & engineering chemistry research (1996)

by Wang, Shuo, Beasley, Helen L., Sumpter, Sheldon R., Kennedy, Ivan R.
Published in Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes (01.04.2003)

by Page, Steven H., Sumpter, Sheldon R., Goates, Steven R., Lee, Milton L., Dixon, David J., Johnston, Keith P.
Published in The Journal of supercritical fluids (01.06.1993)