info:oai:eprints.library.odeku.edu.ua:2558info:ofi/fmt:xml:xsd:journalPopovaM.A.Popova, M.A.4The concept of "multiply-connected systems" as a tool for research of dynamic processes in environmental protection activitiesCollection of scientific articles. - Les Editions L'Originаlе. Economics, management, law: realities and perspectives. Paris, France201655-58article