@book { Managingeconomicsystemswithincompetitivemarketspublishedinrussian, title = "Managing economic systems within competitive markets (published in russian)", author = "Valeriy {Karpov} and Sergey {Kondratyukov}", year = "2015", publisher = "Anchor Academic Publishing", address = "Hamburg, Germany", url = "https://m.anchor-publishing.com/document/312827" }