@article{NSJOM_1988_18_1a_1,
     author = {Cvetkovi\'c Ljiljana and Herceg Dragoslav},
     title = {On the method of averaging functional 

 corections applied to linear systems},
     journal = {Novi Sad Journal of Mathematics},
     pages = {11-16},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1988_18_1a_1/}
}