%0 Journal Article %A Lazarov, Borislav %A Vassileva, Albena %T The thirthieth issue of the Chernorizets Hrabar tournament – junior division %J Mathematics and Education in Mathematics %D 2022 %P 184-189 %V 51 %I mathdoc %U http://geodesic.mathdoc.fr/item/MEM_2022_51_a15/ %G bg %F MEM_2022_51_a15