Luciński, T., et al. “Magnetic and Electric Properties of Ca2Fe2-XAlxO5 Brownmillerites Obtained by Ball Milling High-Energy Process”. Acta Physica Polonica A ISSN 1898-794X , vol. 147, no. 4, Apr. 2025, p. 289, https://doi.org/10.12693/APhysPolA.147.289.