Ursul, Arkadiy, and Arkadiy Ursul. 2012. “For Vladimir Vernadsky’s 150 Th Anniversary V.I. Vernadsky and the Prospects of Noosphere Emergence through Sustainable Development”. Gosudarstvennaya Sluzhba 14 (6): 73-78. https://gosudarstvennaya-sluzhba.owebs.ru/article/view/26514.