1. Merck Index,, 8th Edition, 1046Rahway, N. J. P.: Merck and Co., Inc.
2. Feigl, F. 1954.Spot Tests Inorganic Applications, Vol. 1, 321New York: Elsevier Publishing Co.
3. Feigl, F. 1960.Spot Tests in Organic Analysis, 135New York: Elsevier Publishing Co. and 242
4. Linear Starch Reagents. Cadmium Iodide-Linear Starch Reagent