1. Perry, J. H. and various co-editors, Chemical Engineers’ Handbook, McGraw- Hill, New York, 4th Edn, 1976, 5th Edn, 1985.
2. Schwartzberg, H. G., Chem. Engng Progr., 1980, 21, 67–85.
3. Spanninks, J. A. M., PhD thesis, Agricultural University of Wageningen, 1979.
4. Leniger, H. A. and Beverloo, W. A., Food Process Engineering, Reidel, Dordrecht, 1975.
5. Clarke, R. J., Chem. Ind., 1976, 17 April, 362–5.