@article{10_46793_KgJMat2307_1041DJ,
     author = {Dragan Djur\v{c}i\'c and Danica Fati\'c and Neboj\v{s}a Elez},
     title = {The {Index} {Function} {Operator} for {O-regularly} {Varying} {Functions}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {1040 },
     publisher = {mathdoc},
     volume = {47},
     number = {7},
     year = {2023},
     doi = {10.46793/KgJMat2307.1041DJ},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46793/KgJMat2307.1041DJ/}
}