V.I. Milchev 2002,"Dnipro fortified line", i Small Encyclopedia of Ukrainian Cossacks. Zaporizhzhia National University. ISBN: 9789667529499. Google books
V.I. Milchev 2002,"Dnipro fortified line", i Small Encyclopedia of Ukrainian Cossacks. Zaporizhzhia National University. ISBN: 9789667529499. Google books