BLANK, A., SHEVTSOV, N., STITELMAN, Z., FILLIPPOVICH, L. I., PULYAYEVA, I., POTAPOVA, V., PANTALER, R., NARTOVA, N., MIRENSKAYA, I., MOGILKO, E., LEBED, N., KOTOK, L., ZOLOTOVITSKAYA, E., GLUSHKOVA, L., BABICH, G., & EXPERIANDOVA, L. (1990). Method of analytical control for high-T_c superconducting materials. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 16(5), 618–620. вилучено із https://fnt.ilt.kharkov.ua/index.php/fnt/article/view/f16-0618e