Klym, H., Ingram, A., Shpotyuk, O., Hadzaman, I., Solntsev, V., Hotra, O., & Popov, A. (2016). Positron annihilation characterization of free volume in micro- and macro-modified Cu0.4Co0.4Ni0.4Mn1.8O4 ceramics. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 42(7), 764–769. https://doi.org/10.1063/1.4959021