%0 Journal Article %A Ivailo Shishkov %T On a Conjecture of Choban, Gutev and Nedev %J Mathematica balkanica %D 2004 %P 193 %V 18 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2004_18_1-2_a20/ %F MABA_2004_18_1-2_a20