@misc{Szymczak_Jan_(1946–_)_Siege_2005, author={Szymczak, Jan (1946– )}, editor={Poklewska-Parra, Zuzanna. Translator}, copyright={Rights Reserved - Free Access}, address={Łódź}, howpublished={online}, year={2005}, publisher={Instytut Archeologii i Etnologii PAN [Polska Akademia Nauk]}, publisher={Polska Akademia Nauk. Oddział w Łodzi}, language={eng}, title={Siege artillery in Poland in the fourteenth and the fifteenth centuries}, type={Text}, URL={http://www.rcin.org.pl/iae/Content/22250/PDF/WA308_34834_PIII348_SIEGE-ARTILLERY_I.pdf}, keywords={14th-15th c.-- Poland, medieval artillery, siege of cities in the Middle Ages}, }