Exchange of goods and services is the most important domain of economic cooperation between the Republic of Serbia with the world and is crucial for faster growth of gross domestic product (and thus expected economic growth rates and faster social development and rising living standards) in the coming period. Due to this, paper analyses the degree of involvement of the Republic of Serbia in total world exports, its most important foreign trade partners, the degree of openness of the economy and the share of exports in gross domestic product, analyzing the period from 2008 to 2017. The aim of this paper is to study specific relations between the Republic of Serbia and its most important foreign trade partners and their interdependence with the integration processes through multilateral and bilateral cooperation with the European Union, Eurasian Economic Union, World Trade Organization and Central European Free Trade Agreement. Based on the updated statistical research and analysis of the content of the basic determinants of bilateral agreements, recommendations were given for the future development of integration processes within the European Union and the Eurasian Economic Union.

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The purpose of this paper is to analyse green Public-Private Partnerships (PPPs) as an instrument to contribute to sustainable development. The research of the green PPPs in their international context and the innovative mechanisms for their financial support and implementation is made through a review of their role in the global sustainable development agenda and the policy of the European Union as well as a survey of several case studies. The conceptual framework contains the theoretical background of green PPPs as innovative investment solutions, and the discussion of the results is presented afterwards. The author gives recommendations for overcoming the challenges of the green economy, especially the perception of the collaboration between the private and public sectors in accomplishing the Sustainable Development Goals (SDGs). Particular attention is paid to the new dimensions of cooperation as one of the key factors for achieving better socio-economic and environmental conditions.

The paper examines the BOT (build-operate-transfer) projects as a viable model of public-private partnership. Its purpose is to reveal their conceptual framework, evolution, modern interpretations and implementation benefits. In view of the current economic realities of global financial deficit there are budget constraints at all levels of government in every country. The BOT projects can be considered as an alternative strategy for solving the financial and social problems of each government. They are a popular instrument of modernizing the transport infrastructure, energy sector, telecommunications, water supply, preserving of environment, etc.

The subject of this research is the analysis of competitiveness of the Bulgarian food industry on the international market, with the aim of identifying changes in the export structure of products classified according to commodity groups (SITC Rev.3). In other words, the goal was to point out the sectors which are developing faster and have positive tendencies and influence on the overall competitiveness of the Bulgarian economy. The research used descriptive statistical data processing, the index of comparative advantage of exports - RCA and the index of specialization in foreign trade - GL index. The research results showed that in the analyzed period there were significant changes in the structure of exports, so the groups with leading positions in the initial year of analysis lost their position and were replaced by products of other commodity groups. An increase in the comparative advantage of exports was also confirmed in: Vegetable fats and oils; Cereals and other cereal products; Essential oils, perfumery; Meat and edible leftovers; Rice; Sugar, molasses and honey; etc. It was also established that the products with a pronounced intra-industrial character of exchange in 2017 were: Fruit and vegetable juices; Sugar products; Meat and edible residues; Bird eggs and yolks, egg whites; Butter and other fats obtained from milk, milk spreads, etc.