@article{NSJOM_1998_28_3a_10,
     author = {Ma\v{s}ulovi\'c Dragan},
     title = {On the 

 path number of a digraph},
     journal = {Novi Sad Journal of Mathematics},
     pages = {115-117},
     publisher = {mathdoc},
     volume = {28},
     number = {3},
     year = {1998},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1998_28_3a_10/}
}