1. NF ISO 11464. Qualite du sol. Pretraitement des echantillons pour analyses physico-chimiques;AFNOR,1994
2. Random sampling or geostatistical modelling? Choosing between design-based and model-based sampling strategies for soil (with Discussion);Brus;Geoderma,1997
3. Spatial Processes: Models and Applications;Cliff,1981
4. Relative accuracy of systematic and random samples for a certain class of populations;Cochran;Ann. Math. Stat.,1946
5. Sampling Techniques;Cochran,1977