Titov, Y., Slobodyanik, M., Chumak, V. and Tymoshenko, M. 2021. Synthesis of heterovalently substituted slab perovskites Sr 2–xLnxBIV1–xBxIIIO4(BIV = Sn, Ti, BIII = Sc, In) . Reports of the National Academy of Sciences of Ukraine. 1 (Apr. 2021), 77–83. DOI:https://doi.org/10.15407/dopovidi2021.01.077.