REFERENCES
- David , M. 1977 . Geostatistical Ore Reserve Estimation Amsterdam : Elsevier. .
- Soares , A. 1993 . Geostatistics Troia '92 Dordrecht , , The Netherlands : Kluwer. .
- Ziegel , E. 1995 . Report on Geostatistics Troia '92, edited by A. Soares . Technometrics , 37 : 355