@misc{Costa_Eduarda_Marques_da_What_2013,
 author={Costa, Eduarda Marques da and Palma, Pedro and Rauhut, Daniel and Humer, Alois and Constantin, Daniela and Velasco Echeverria, Xabier},
 volume={23},
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 journal={Europa XXI},
 howpublished={online},
 year={2013},
 publisher={IGiPZ PAN},
 language={eng},
 type={Text},
 title={What indicators to use when measuring Services of General Interest?},
 URL={http://rcin.org.pl/igipz/Content/42017/PDF/WA51_59791_r2013-t23_EuropaXXI-Costa.pdf},
 keywords={services of general interest, indicators, spatial cohesion, European Union},
}