Karumuri, S. R., V. U. M. Rao, J. V. Sekhar, M. S. Surendrababu, T. B. Patrudu, N. Vamsikrishna, K. S. Babu, V. S. S. Kumar, and G. Srinivas. “Studies of the Vibrational Energy Level of H2O by Algebraic and DFT Approaches”. Ukrainian Journal of Physics, vol. 58, no. 9, Oct. 2018, p. 836, doi:10.15407/ujpe58.09.0836.