1. "Adamovich, G.E. Krivich. Rukopashnyy boy: sistema slavyanskikh yedinoborstv [Hand-to-hand combat: the system of Slavic martial arts]. Minsk: Bukmaster, 2012 (in Russian).
2. Afanas'yev, A.N. Poeticheskiye vozzreniya slavyan naprirodu: Opyt sravnitel'nogo izucheniya slavyanskikh predaniy i verovaniy v svyazi s mificheskimiskazaniyami drugikh rodstvennykh narodov. V trekh tomakh [Poetic views of the Slavs on nature: An experience of a comparative study of Slavic traditions and beliefs in connection with the mythical tales of other kindred peoples. In three volumes]. vol. 1. Moscow: Akademicheskiy proyekt, 1995 (in Russian).
3. Akty, otnosyashchіesya k istorіi Voyska Donskogo [Acts related to the history of the Don Cossacks], vol. 2, edited by A.A. Lishin, Novocherkassk: Oblastnoye pravleniye Voyska Donskogo, 1894 (in Russian).
4. Akunov, V.V. Berserki. Voiny-medvedi drevnego Severa [Berserkers. Warriors-Bears of the Ancient North]. Moscow: Veche, 2014 (in Russian).
5. Al'bovskiy, E.A. Khar'kovskiye kazaki. Vtoraya polovina XVII st. [Kharkov Cossacks. Second half of the 17th century], vol. 1. Khar'kov: Khar'k. Chastnyy muzey gor. usad'by, 2005 (in Russian).