1. Théorie et pratique de l'échantillonnage des matières morcelées;Gy,1975
2. Control of geochemical error through sampling and subsampling diagrams;Ingamells;Geochim. Cosmochim. Acta,1974
3. Control of geochemical error through sampling and subsampling diagrams;Ingamells;Geochim. Cosmochim. Acta,1974
4. Evaluation of skewed exploration data;Ingamells,1976
5. New approaches to geostatistical evaluations;Samland,1973