AUTONOMY IN THE RUSSIAN FEDERATION: THEORY AND PRACTICE ArticleKartashkin V.A., Abashidze A.Kh.International Journal on Minority and Group Rights. Том 10. 2003. С. 203-220
ON SOME PROPERTIES OF THE SHORTEST CURVE IN A COMPOUND DOMAIN ArticleDavydova A.V., Karamzin D.Y.Differential Equations. Том Vol 51 Iss 12. 2015.