@article{NSJOM_2004_34_1a_16,
     author = {D. 

 Herceg and Dj. Herceg},
     title = {On a 

 nonequdistant difference scheme of {Chawla} type},
     journal = {Novi Sad Journal of Mathematics},
     pages = {171-190},
     year = {2004},
     volume = {34},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2004_34_1a_16/}
}