@article{NSJOM_2006_36_1a_1,
     author = {B.J. Male\v{s}evi\'c},
     title = {Some combinatorial aspects of

 the composition of a set of functions},
     journal = {Novi Sad Journal of Mathematics},
     pages = {3-9},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {2006},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2006_36_1a_1/}
}