@article{PIM_1977_N_S_22_36_a0,
     author = {S. Aljan\v{c}i\'c and D. Aran{\dj}elovi\'c},
     title = {O-Regualarly {Varying} {Functions}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {5 },
     publisher = {mathdoc},
     volume = {_N_S_22},
     number = {36},
     year = {1977},
     url = {http://geodesic.mathdoc.fr/item/PIM_1977_N_S_22_36_a0/}
}