@article{NSJOM_2003_33_2a_14,
     author = {I. 

 Radeka and D. Herceg},
     title = {High order 

 methods for semilinear singularly perturbed boundary value problems},
     journal = {Novi Sad Journal of Mathematics},
     pages = {139-161},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2003_33_2a_14/}
}