@article{KJM_2005_28_1_a0,
     author = {Redakcija  },
     title = {Preface},
     journal = {Kragujevac Journal of Mathematics},
     pages = {5 - 6},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/KJM_2005_28_1_a0/}
}