21st International Conference on Surface Modification of Materials by Ion Beams : SMMIB 2019, 25. - 30. 8. 2019, Tomsk, Russia. 1. vyd. Tomsk : Tomsk Polytechnic University, 2019. 200 s. Available on Internet: <https://smmib.ru/assets/files/SMMIB2019_TOMSK_full.pdf>