Malczewski, D. “Mössbauer Spectroscopy of Annealed Metamict Gadolinite REE2Fe2+Be2Si2O10 from 473 to 873 K in Air”. Acta Physica Polonica A, vol. 147, no. 6, June 2025, p. 446, https://doi.org/10.12693/APhysPolA.147.446.