IbragimovaF. B., Physicochemical principles of polycondensation of polyphosphoric acid with derivatives of glycerin dichlorohydrin. Plast. Massy, No. 6, 2000, p. 30
2.
AmanovM. R., Liquid and solid chlorine-free polyphosphate fertilisers based on extraction phosphoric acid and potassium chloride. Author's abstract of M. Sci. thesis, Tashkent, 1985, p. 21
3.
IonovaL. A. and PostnikovN. N., Chromatographic analyses of condensed phosphates and polyphosphoric acids. Zh. Khim. Prom-st’, No. 3, 1960, pp. 38–40