Brodin, M.S., Gandzha, I.S., Zagorodny, A.G., Chumak, O.O. and Shenderovskyi, V.A. 2018. Petro Mykhailovych Tomchuk (to the 80th Anniversary of His Birthday). Ukrainian Journal of Physics. 59, 1 (Oct. 2018), 98. DOI:https://doi.org/10.15407/ujpe59.01.0098.