%0 Journal Article %A Svetoslav J. Bilchev %A P. Kenderov %T Bulgarian winter competitions in Mathematics, Informatics and Mathematical Linguistics %J Μαθηματική Επιθεώρηση %D 2001 %P 89-106 %V 56 %I mathdoc %U http://geodesic.mathdoc.fr/item/MR_2001__56_a12/ %G gr %F MR_2001__56_a12