Cossacks in the Civil War in Southern Russia: 1917-1920 by Oleg Kulakov, Mikhail Sarychev published in 2018; Soviet dirks by Evgeny Boldyrev, Dmitry Ilyasov, Oleg Kulakov, Timur Akhverdiyev published by the Faust Editors in Voronezh in 2014; Russian Dirks by Evgeny Boldyrev published by the Faust Editors in Voronezh in 2015.