1. Correlation of extrusion forces, raw materials and sphere characteristics;Baert;J. Pharm. Pharmacol.,1992
2. Experiments with mixtures;Scheffé;J.R. Stat. Soc.,1958
3. Simplex-centroid designs for experiments with mixtures;Scheffé;J.R. Stat. Soc.,1963
4. Experiments with mixtures: a review;Cornell;Technometrics,1973