%0 Journal Article %T Customs services: essence, procedure of provision and quality problems %A Zybenko, S.V. %K economy, export, trade, foreign trade activity, customs service, service, integration, barriers, intellectual property, market, services, customs institutions, fiscal function, international cooperation, efficiency, service %J Russian Journal of Management %D 2021 %N 9 %P 4 %I Publishing Center RIOR