@article{NSJOM_1975_5_Nonea_4,
     author = {Had\v{z}i\'c Olga and Pap Endre},
     title = {Some applications of the diagonal 

 theorem in {Functional} analysis},
     journal = {Novi Sad Journal of Mathematics},
     pages = {23-33},
     publisher = {mathdoc},
     volume = {5},
     year = {1975},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1975_5_Nonea_4/}
}