Schjønning, P. (2007).
The role of soil science in optimization of soil resource management. I M. Lund, T. U. Larsen, J. O. Thøgersen, S. Christensen, C. Børsting, F. Plauborg, L. J. Munkholm, J. E. Olesen, O. Callesen, M. Askegaard, J. G. Hansen & T. Hvelplund (red.),
NJF 23rd Congress 2007: Trends and perspectives in agriculture (Bind 3, s. 169-170). Nordic Association of Agricultural Scientists.