1. Alakukku, L., 1997. Long-term soil compaction due to high axle load traffic. Ph.D. Thesis. Institute of Crop and Soil Science, Agricultural Research Centre of Finland, Jokioinen, Finland.
2. Alakukku, L., Weisskopf, P., Chamen, W.C.T., Tijink, F., Van der Linden, J.P., 2000. Prevention of field traffic-induced subsoil compaction. In: Proceedings of the Third Workshop of the Concerted Action on Subsoil Compaction, Department of Soil Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden, 14–16 June 2000, pp. 178–193.
3. Alakukku, L., Weisskopf, P., Chamen, W.C.T., Tijink, F.G.J., Van der Linden, J.P., Pires, S., Sommer, C., Spoor, G., 2003. Prevention strategies for field traffic-induced subsoil compaction: a review. Part 1. Machine/soil interactions. Soil Till. Res. 73, 145–160.
4. Annetts, J.E., Audsley, E., 2002. Multiple objective linear programming for environmental farm planning, J. Operat. Res. 53, 933–943.
5. A model for estimating crop yield losses caused by soil compaction;Arvidsson;Soil Till. Res.,1991