N. Ivanova, O. Nieizviestna, L. Shevchenko, V. Kotkovskyi, and Y. Tryhubchenko, “Signal approach for determining the level and assessing financial security”, in CHALLENGES AND PARADIGM OF NATIONAL AND INTERNATIONAL SECURITY OF THE XXI CENTURY: ECONOMIC AND TECHNOGENIC DISCOURSE, O. Chernega and Y. Bocharova, Eds. Kharkiv: TECHNOLOGY CENTER PC, 2022, pp. 82–105.