1. Growth of Potassium Tantalate-Niobate Single Crystals for Optical Applications;Bonner;Am. Ceram. Soc. Bull.,1965
2. Phase Equilibria in the System K2CO3-Nb2O5 by the Method of Differential Thermal Analysis;Reisman;J. Am. Chem. Soc.,1955
3. Some Peculiarities of the Growth of Single Crystals of Potassium Niobate and Tantalate;Timofeeva;Soviet Phys.-Cryst. (English Transl.),1962
4. 4 Raymond Rohmer and J. E. Guerchais , “Potassium Niobates: I,” Bull. Soc. Chim. France, 1961, 317-23; “II,” 324-34.
5. Reactions Between Niobium Oxide and K2CO3 by a Dry Method: Hydrolysis of the Products: III;Guerchais;ibid.