Enthalpies of Formation of Hexaaluminates EuMg0.8Al11O18.8 and GdMg0.8Al11O18.8. - Bazhenova, I. A.; Kuzovchikov, S. V.; Ryumin, M. A.; Gagarin, P. G.; Guskov, A. V.; Guskov, V. N.; Khvan, A. V.; Gavrichev, K. S. (Russian Journal of Physical Chemistry A: Focus on Chemistry, 2025)