by Bar’yakhtar, V. G., Zagorodny, A. G., Loktev, V. M., Mryglod, I. M., Shul’ga, M. F., Yukhnovs’kyi, I. R.
Published in Ukrainian journal of physics (Kiev) (18.09.2019)

by Bakai, O. S., Bar’yakhtar, V. G., Bulavin, L. A., Zagorodny, A. G., Loktev, V. M., Storizhko, M. Yu, Shulga, M. F., Yukhnovskyi, I. R., Gusynin, V. P., Zinovjev, G. M., Pashitskii, E. A., Petrov, E. G., Jenkovszky, L. L., Kobushkin, O. P., Kukhtin, V. V.
Published in Ukrainian journal of physics (Kiev) (15.07.2020)