Principles of natural capital preservation in the context of strategy of state environmental safetyOleksandr Radchenko, Valeriia Kovach, Oksana Radchenko, Oleksiy Kriukov, Liudmyla Sydorchuk, Petr Sharov and Inna Semenets-OrlovaE3S Web Conf., 280 (2021) 09024DOI: https://doi.org/10.1051/e3sconf/202128009024