@misc{Bergenstrol._Red._Plan_[ca, author={Bergenstrol. Red. and D'Avignon, Francis Ferdinand (ca 1813 - ?). Litogr.}, copyright={Public Domain}, address={[Petersburg]}, howpublished={online}, year={[ca 1835]}, publisher={General'nyj Štab}, language={rus}, language={fre}, title={Plan okrestnostej goroda Kališa = Plan des environs de Kalisz}, keywords={topographical maps, environs of Kalisz, 19th century}, }