КРЕТИНИН, Валерий Алексеевич. Space of Russia: the state and the problems of further development. Scientific Notes. Vladimir Branch, [S. l.], v. 7, n. 2, p. 22–28, 2018. Disponível em: https://vladimir-uz.owebs.ru/article/view/16030. Acesso em: 8 nov. 2026.