@article{NSJOM_1997_27_2a_4,
     author = {Kova\v{c}evi\'c Ilija},
     title = {On {Mn} 

 subsets},
     journal = {Novi Sad Journal of Mathematics},
     pages = {45-52},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {1997},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1997_27_2a_4/}
}