@article{NSJOM_1993_23_1a_30,
     author = {Herceg Dragoslav},
     title = {On numerical solution of 

 singularly perturbed boundary value problem {III}},
     journal = {Novi Sad Journal of Mathematics},
     pages = {371-381},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1993},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1993_23_1a_30/}
}