@article{NSJOM_1976_6_Nonea_6,
     author = {Nikoli\'c-Despotovi\'c Danica},
     title = {The 

 representation and the properties of a class of operators},
     journal = {Novi Sad Journal of Mathematics},
     pages = {41-48},
     publisher = {mathdoc},
     volume = {6},
     year = {1976},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1976_6_Nonea_6/}
}