1Department of Geology, University of Leicester, Leicester LE1 7RH England
Tài liệu tham khảo
Blais, 1968, Application of geostatistics in ore evaluation, Vol. 9, 41
Gy, 1968, The theory and practice of sampling broken ores, Vol. 9, 5
Matheron, 1962, Tome 1
Matheron, 1962, Tome 2, 172