1. A. M. SHAW, J. C. REAL and V. A. PARDO, 13th Ann. Proc. Assoc. Cane Sugar Tech. Cuba (1939).
2. G. L. SPENCER and G. P. MEADE, Cane Sugar Handbook, 8th Edition, New York (1944) p. 253.
3. C. A. BROWNE and F. W. ZERBAN, Sugar Analysis, New York (1941).
4. P. HONIG, On Filtrability, paper presented to 11th Annual Meeting, Sugar Industry Technicians Inc., New York (1951).