@article{PIM_1997_N_S_61_75_a6,
     author = {Dragan {\DJ}ur\v{c}i\'c},
     title = {O-regularly {Varying} {Functions} and {Some} {Asymptotic} {Relations}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {44 },
     publisher = {mathdoc},
     volume = {_N_S_61},
     number = {75},
     year = {1997},
     zbl = {0901.26002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1997_N_S_61_75_a6/}
}