@article{NSJOM_1989_19_1a_0,
     author = {Surla Katarina and Jerkovi\'c V.},
     title = {An exponentially fitted 

 quadratic spline difference scheme on a non-uniform mesh},
     journal = {Novi Sad Journal of Mathematics},
     pages = {1-10},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {1989},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1989_19_1a_0/}
}