1. Color Removal in Sugar Liquors by Synthetic Resins
2. “Activit” N.V. Octrooiën Maatschappij, French Patent 805,092 (November 10, 1936).
3. Editorial
4. Adams, B. A., and Holmes, E. L., U.S. Patent 2,104,501 (January 4, 1938).
5. Almy, E. F., and Garrett, O. F., U.S. Patent 2,477,558 (April 12, 1949).