@article{NSJOM_1993_23_2a_33,
     author = {Cvetkovi\'c Ljiljana and Herceg Dragoslav},
     title = {How to 

 apply theory of {G-functions} to the convergence analysis of the 

 relaxation methods},
     journal = {Novi Sad Journal of Mathematics},
     pages = {393-400},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1993},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1993_23_2a_33/}
}