Keramika ot rannata faza na staroželeznjata epocha, ot vr : Treskavec pri g. Teteven (Loveška obl., B'lgarija). Ceramics of the end of Bronze Age andd the beginning of the Old Iton epoch from the top of Treskavec (Teteven city, central North Bulgaria). - Lazarov, L. (2009)