Kolchuk M, Ishchenko O, Ostapenko S. Theoretical basis of security in the XXI century. In: Chernega O, Bocharova Y, eds. CHALLENGES AND PARADIGM OF NATIONAL AND INTERNATIONAL SECURITY OF THE XXI CENTURY: ECONOMIC AND TECHNOGENIC DISCOURSE. TECHNOLOGY CENTER PC; 2022:3-25. doi:10.15587/10.15587/978-617-7319-59-6.ch1