Dryuchko Оleksandr, et al. “Formation of Polyfunctional Photocatalytically Active Layered Oxide Materials Using Coordination Nitrates REE and Alkali Metal As Precursors”. Academic Journal Industrial Machine Building Civil Engineering, vol. 2, no. 57, Sept. 2022, pp. 137-48, doi:10.26906/znp.2021.57.2597.