@misc{Grela_Damian_How,
 author={Grela, Damian and Sapiecha, Krzysztof and Strug, Joanna},
 howpublished={online},
 publisher={Wydaw. Uniwersytetu Marii Curie-Skłodowskiej},
 language={eng},
 type={czasopismo},
 title={How validation can help in testing business processes orchestrating web services},
}