Klym, H.     Positron annihilation lifetime spectroscopy in application to spinel-based thick-film materials [Текст] / Halyna Klym // Baltic school on application of neutron and synchrotron radiation in solid state physics and material science (BSANS-2012) : book of abstr., 1-4 Oct. 2012, Riga, Latvia. — Riga, 2012. — P. 39.