Bronzov nakrajnik za nožnica na meč ot severoiztočna Bălgarija - Dončeva, Stela (Orăžie i snarjaženie prez kăsnata antičnost i srednovekovieto 4-15 v : Meždunarodna konferencija, Varna 14-16 septemvri 2000. Weapons and military equipment during the late antiquity and the middle ages 4th-15th centuries. International Conference Varna, 14-16 September 2000., 2002)