Caesar, T., Sainju, U.M., Wright, S.E., Shelver, W.L., Kolberg, R.L., West, M.S. 2010. Long-term tillage and cropping effects on biological properties associated with soil aggregation in semi-arid eastern Montana, USA. Biology and Fertility of Soils. 47:157-165.
Sainju, U.M., Caesar, T., Lenssen, A.W., Evans, R.G., Kolberg, R.L. 2007. Long-term tillage frequency and cropping intensity effects on dryland residue and soil carbon fractions. Soil Science Society of America Journal. 71(6):1730-1739.
Sainju, U.M., Caesar, T., Lenssen, A.W., Evans, R.G., Kolberg, R.L. 2007. Long-term tillage and cropping system effects on dryland soil carbon sequestration and fractions. Positioning Agriculture and Forestry to Meet the Challenges of Climate Change. In Fourth USDA Greenhouse Gas Conference. February 6-8, 2007. Baltimore, MD. p.38.
Cochran, V.L., Danielson, J., Kolberg, R.L., Miller, P., Padbury, G. 2006. Dryland Cropping in the Canadian Prairies and the U.S. Northern Great Plains. Dryland Agriculture. Second Edition. Madison, Wisconsin, USA: American Society of Agronomy, Inc., Crop Science Society of America, Inc., Soil Science Society of America, Inc. p. 293-340.