1. Arnold, J. G, Kiniry, J. R., Srinivasan, R., Williams, J. R., & Neitsch, S. L. (2012). Soil and water assessment tool: Input/output documentation. Version 2012. TR-439, Texas Water Resources Institute, College Station, 1-650.
2. Kuncheva, G. S. (2019). Loss of organic matter and macroelements from water erosion. Publishing Center at the University of Ruse “A. Kanchev”. (In Bulgarian).
3. Kuncheva, G., Dimitrov, P., Ivanova, I., & Enchev, E. (2022). Evapotranspiration, development and productivity of wheat under different tillage systems on sloping terrains. In: Proceedings of the 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE), 30 June–2 July 2022, Ruse. (In Bulgarian).
4. Momcheva, J., Onchev, N., & Jumalieva, D. (1989). Erosion control effectiveness of some crop rotations on Calcareous Chernozem on Loess. In Raikov et al. (Eds.), Proceedings of 4th National soil Conference “Soil Science Problems in Conditions of Intensive Agriculture” (pp. 631–637). Bulgarian Soil Science Society. (In Bulgarian).
5. Rousseva, St., Stoynova, V., Lozanova, L., Malinov, I., Tsvetkova, E., Dzhodzhov, Hr., Krumov, V., Mitova, M., & Ilieva, D. (2015). Erosion factors and risk of water and wind erosion of the soil in the area of the Bulgarian Chernozems. In Teoharov, M. (Ed.) Chernozems in Bulgaria—Problems, assessment, use and conservation. Scientific Papers (pp. 95–115). Bulgarian Soil Science Society. (In Bulgarian).