@article{NSJOM_1998_28_1a_2,
     author = {N. 

 Ad\v{z}i\'c},
     title = {Some 

 nonlinear {SPP} and spectral approximation},
     journal = {Novi Sad Journal of Mathematics},
     pages = {37-46},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1998},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1998_28_1a_2/}
}