@article{MABA_2004_18_3-4_a21,
     author = {P. Rajkovic and M. Ivkovic and M. Petkovic},
     title = {A {Conjecture} about {Positivity} of the {Polynomials} {Obtained} by the {Expanding} of a {Product}},
     journal = {Mathematica balkanica},
     pages = {419},
     publisher = {mathdoc},
     volume = {18},
     number = {3-4},
     year = {2004},
     url = {http://geodesic.mathdoc.fr/item/MABA_2004_18_3-4_a21/}
}