Al-Dhahir, Tariq A., et al. “Crystal Growth of Ceasium Hydrogen Sulfate Salts 4CsHSO”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 28, no. 2, Apr. 2017, pp. 317-26, https://jih.uobaghdad.edu.iq/index.php/j/article/view/240.