DMITRIEV, V. A., OFITSEROV, M. N., & PRENTSLAU, N. N. (1990). Peculiarities of temperature and frequency dependences of impedance in Y—Ba—Cu—О ceramics in normal state. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 16(5), 644–646. вилучено із https://fnt.ilt.kharkiv.ua/index.php/fnt/article/view/f16-0644ea