@misc{Pieńkowski_Jakub._The_2018.06.04,
 author={Pieńkowski, Jakub. and Żornaczuk, Tomasz.},
 copyright={The Polish Institute of International Affairs (PISM)},
 address={Warsaw},
 howpublished={online},
 year={2018.06.04},
 publisher={The Polish Institute of International Affairs (PISM)},
 language={eng},
 abstract={Initiated at the end of 2017, the Varna Quadrilateral is a forum for cooperation between Bulgaria, Greece, Serbia and Romania. It is intended to improve coordination of cross-border infrastructure and energy investments between the largest countries in southeastern Europe. Meetings to date also show that collaboration can have clear political elements. However, a half year after the inauguration of the new initiative, its future is in doubt due to the great differences between its members.},
 type={file},
 title={The Varna Quadrilateral: A New Format for Regional Cooperation},
 keywords={Bułgaria, Grecja, Serbia (desde 1991/92), Rumunia, współpraca międzynarodowa, inwestycje, energetyka},
}