@article{MABA_2004_18_1-2_a20,
     author = {Ivailo Shishkov},
     title = {On a {Conjecture} of {Choban,} {Gutev} and {Nedev}},
     journal = {Mathematica balkanica},
     pages = {193},
     publisher = {mathdoc},
     volume = {18},
     number = {1-2},
     year = {2004},
     url = {http://geodesic.mathdoc.fr/item/MABA_2004_18_1-2_a20/}
}