@misc{Mazurek_Cezary_Extending,
 author={Mazurek, Cezary and Mielnicki, Marcin and Werla, Marcin},
 howpublished={online},
 publisher={PCSS},
 language={eng},
 title={Extending OAI-PMH protocol with dynamic sets definitions using CQL language. White Paper.},
 type={raport},
 keywords={CQL, interoperability, metadata access and distribution, metadata aggregation, OAI-PMH, selective metadata harvesting},
}