@article{NSJOM_1998_28_3a_15,
     author = {Surla 

 Katarina},
     title = {Exponential functions as boundary layer functions},
     journal = {Novi Sad Journal of Mathematics},
     pages = {159-176},
     publisher = {mathdoc},
     volume = {28},
     number = {3},
     year = {1998},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1998_28_3a_15/}
}