@article{NSJOM_1990_20_2a_0,
     author = {Herceg Dragoslav},
     title = {On the numerical 

 solution of a singulary perturbed nonlocal problem},
     journal = {Novi Sad Journal of Mathematics},
     pages = {1-10},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1990},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1990_20_2a_0/}
}