1. Differentiation of Caseyville (Pennsylvanian) and Chester (Mississippian) sediments in the Illinois Basin;Atherton;IL State Geol. Surv. Circ.,1960
2. Bartow, E., Udden, J.A., Parr, S.W., Palmer, G.T., 1909. The Mineral Content of Illinois Waters. IL State Geol. Surv. Bull. 10.
3. Hydrologic constraints on the genesis of the Upper Mississippi Valley mineral district from Illinois Basin brines;Bethke;Econ. Geol.,1986
4. Supercomputer analysis of sedimentary basins;Bethke;Science,1988
5. Bethke, C.M. and Yeakel, S., 2018. The Geochemist’s Workbench, Release 11. GWB Essentials Guide, Aqueous Solutions, LLC, Champaign, IL.