@article{NSJOM_1982_12_Nonea_15,
     author = {Cvetkovi\'c Ljiljana and Herceg Dragoslav},
     title = {On a numerical solution of the {Boundary} value problem 

 using an optimal numerical differentiation},
     journal = {Novi Sad Journal of Mathematics},
     pages = {177-189},
     publisher = {mathdoc},
     volume = {12},
     year = {1982},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1982_12_Nonea_15/}
}