TY JOUR TI Informal economy of "green gold": analysis of structural features and prospects of development of the shadow emerald market of foreign countries KW shadow economy KW emerald market KW Colombia KW illegal mining KW capital laundering KW criminal networks KW resource curse KW socio-economic destabilization JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Ulendeeva, N.I. AU Nalimova, M.N. AU Korolev, A.A. PY 2026 IS 0 PB ITBO University