@article{NSJOM_1993_23_2a_34,
     author = {Herceg, Dragoslav},
     title = {On a discrete analogue 

 for boundary value problem},
     journal = {Novi Sad Journal of Mathematics},
     pages = {401-410},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1993},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1993_23_2a_34/}
}