Neupane, G. and Roberts, S.J., 2008, Quantitative Comparison of Heavy Metals and As Accumulation in Agricultural and Forest Soils near Bowling Green, Ohio, Water, Air, & Soil Pollution, DOI 10.1007/s11270-008-9811-z.
Roberts, S.J., Gottgens J.F., Spongberg, A.L., Evans, J.E. and Levine, N.S., 2007, Assessing potential removal of low-head dams in urban settings: An example from the Ottawa River, NW Ohio, Environmental Management, v. 39, p. 113-124.
Braun, G.M., Levine, N.S., Roberts, S.J. and Samel, A.N., 2003, A geographic information systems methodology for the identification of groundwater recharge areas in Waukesha County, Wisconsin, Environmental & Engineering Geoscience Journal, v. 9, p. 267-278.
Evans, J.E., Levine, N.S., Roberts, S.J. and Gottgens, J.F., Newman, D.M., 2002, Assessment using GIS and sediment routing of the proposed removal of Balville Dam, Sandusky River, Ohio, Journal of the American Water Resources Association, v. 38, p. 1549-1565.
Levine, N.S., Roberts, S.J.,and Aring, J.L., 2002, Geological Controls on the Distribution of Selected Inorganic Ions in Ohio Groundwater, Environmental & Engineering Geoscience Journal, v. VIII, p. 319-328.
Pesci, M.S., Roberts, S.J., and Levine, N.S., 2002, Metal concentrations in soils from a woodlot and former coal storage area on the campus of Bowling Green State University, The Compass of Sigma Gamma Epsilon, v. 76, p. 72-82.