1. Sampling approaches for soil survey updates;Abbitt,1995
2. A heavy metal monitoring-program in Denmark;Bak;Science of the Total Environment,1997
3. Breeuwsma, A., Reijerink, J.G.A., Schoumans, O.F., Brus, D.J., van het Loo, H., 1989. Fosfaatbelasting van bodem, grond-en oppervlaktewater in het stroomgebied van de Schuitenbeek. Wageningen, DLO-Staring Centrum, Rapport 10.
4. Markov Chain designs for one-per-stratum sampling;Breidt;Survey Methodology,1995
5. Random sampling or geostatistical modeling? Choosing between design-based and model-based sampling strategies for soil (with Discussion);Brus;Geoderma,1997