@article{PIM_1979_N_S_25_39_a20,
     author = {Lazar Pevac},
     title = {Some {Result} {About} {Approximation} {Of} {Sets} {By} {Finite} {Sets} {In} {Normed} {Spaces}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {138 },
     publisher = {mathdoc},
     volume = {_N_S_25},
     number = {39},
     year = {1979},
     url = {http://geodesic.mathdoc.fr/item/PIM_1979_N_S_25_39_a20/}
}