Utelbayev, B. T., E. N. Suleimenov, A. Utelbayeva, and N. Zhanabai. “Role of Atomic-Molecular Formations in Chemistry”. Theory and Applications of Chemistry Vol. 1, June 2019, pp. 88-97, https://stm1.bookpi.org/index.php/tac-v1/article/view/100.