Rozantsev, G.M. “Structural Fragments Izopolivolframat–Anions and Gibbs Energy of Formation ”. Physics and Chemistry of Solid State 16, no. 3 (September 15, 2015): 524–527. Accessed May 5, 2024. https://scijournals.pnu.edu.ua/index.php/pcss/article/view/1645.