@article{NSJOM_1989_19_2a_14,
     author = {Surla 

 Katarina and Jerkovi\'c V},
     title = {Spline difference scheme 

 on a non-uniform mesh},
     journal = {Novi Sad Journal of Mathematics},
     pages = {149-160},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1989},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1989_19_2a_14/}
}