1. Properties of compacted fine-textured soils as affected by crop rotation and reduced tillage;Alakukku;Soil Till. Res.,1998
2. Response of annual crops to subsoil compaction in a field experiment on clay soil lasting 17 years;Alakukku;Adv. Geoecol.,2000
3. Runoff losses of nutrients and soil from ground fall-fertilized after soybean harvest;Baker;Trans. Am. Soc. Agric. Eng.,1983
4. A rapid method to determine total phosphorus in soils;Bowman;Soil Sci. Soc. Am. J.,1988
5. Förluster av kväve, fosfor och kalium från åker. Sveriges lantbruksuniversitet, Avdelning för vattenvård, Uppsala, Sweden;Brink;Ekohydrologi,1979