@article{NSJOM_1994_24_1a_30,
     author = {Surla Katarina},
     title = {Some difference schemes 

 derived via finite element method},
     journal = {Novi Sad Journal of Mathematics},
     pages = {341-346},
     publisher = {mathdoc},
     volume = {24},
     number = {1},
     year = {1994},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1994_24_1a_30/}
}