@ARTICLE{Wiewióra_Marcin_Teutonic_2013,
 author={Wiewióra, Marcin},
 number={No 1},
 journal={Kwartalnik Architektury i Urbanistyki},
 howpublished={online},
 year={2013},
 publisher={Komitet Architektury i Urbanistyki PAN},
 title={Teutonic order castles in the Chełm region in the light of new research of selected subjects},
 URL={http://journals.pan.pl/Content/87869/mainfile.pdf},
}