@misc{Strzyż_Piotr_Water_2011,
 author={Strzyż, Piotr},
 copyright={Rights Reserved - Free Access},
 address={Łódź},
 howpublished={online},
 year={2011},
 publisher={Institute of Archaeology and Ethnology of Polish Academy of Sciences},
 publisher={Polish Academy of Sciences. Łódź Branch},
 language={eng},
 language={pol},
 title={Water obstacles and the means to cross them in warly medieval Poland},
 type={Text},
 URL={http://www.rcin.org.pl/Content/23021/PDF/WA308_35579_PIII348_WATER-OBSTACLES_I.pdf},
 keywords={Middle Ages -- Poland, water obstacles, crossing the rivers in the Middle Ages, medieval wooden bridges},
}