Eremenko, V., Feodosyev, S., Gospodarev, I., Sirenko, V., Shvedun, M., McCallum, W., & Tovar, M. (2005). Negative thermal expansion of HTSC-type structures:low temperature structure measurementson Eu_1+x(Ba_1-yR_y)_2-xCu₃O_7-d compounds and theoretical treatment. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 31(3-4), 350–355. https://doi.org/10.1063/1.1884428